System.NotSupportedException in unity 2019 only in Build mode

We use the AxSeriel COM Driver from https://www.activexperts.com/serial-port-component/ . It's a DLL that is placed in the Scripts folder and then used in c#.

In the Editor everything works fine but when we create a build we get the NotSupportedException error thrown.
The Whole construct worked with the 2018 Version of Unity, after the Update this problem appeared.

Code (csharp):

1. System.NotSupportedException: Specified method is not supported.
2.   at (wrapper cominterop) AxSerial.ComPortClass..ctor()
3.   at MyNamespace.Serial.SerialManager.initComponents () [0x0005d] in C:\Users\MYUSER\Documents\Unity\MYPROJECT\Assets\Scripts\Serial\SerialManager.cs:86
4.  

We've tried verious solutions that we found all over the internet loke creating a DLL folder in the Assets root and palce the dll there and alos copy itin the Unity/Editor folder etc. Nothing worked :/

Maybe someone have a Hint/Solution for this problem.

Thanks.

 

Ok it works with .NET 4.x. Didn't thought of that.
Thank you.

 

Hi i'm using 4.x and il2cpp. When i try to connect my database on my android device i'm getting this error:
method body replaced by unityLinker.exe with a notsupportedexception

Mono method works fine on android device but i don't know why its says this when i use il2cpp

 

I can't but i can explain more now. After hundred tries i found source of this issue. "Managed Stripping Level". When it's enables Low, MEdium or High doesn't matter Issue comes out. Mono or IL2CPP doesn't matter both mode gives this error when managed stripping level enables. I don't took any error in mono because i can disable it. But IL2CPP can't. How can bypass this mode. I read documentation of Managed Stripping Level it says removing unreachable codes. I don't want it. It's killing my game. I can't publish my game with this issue. My game is like a trash and totally waste of time if this issue can't be resolved. Also my other online games because i use them too this plugins. By the way is there any way to bypass to deleting unreachable codes or totally disabling the stripping method in IL2CPP .?

 

Code (CSharp):

1. <linker>
2.     <assembly fullname="MySql.Data" preserve="all">
3.         <type fullname="*" preserve="all"/>
4.     </assembly>
5.     <assembly fullname="Newtonsoft.Json" preserve="all">
6.         <type fullname="*" preserve="all"/>
7.     </assembly>
8.     <assembly fullname="Assembly-CSharp" preserve="all">
9.         <type fullname="*" preserve="all"/>
10.     </assembly>
11.     <assembly fullname="System" preserve="all"/>
12.     <assembly fullname="UnityEngine" preserve="all"/>
13.     <assembly fullname="mscorlib" preserve="all"/>
14. </linker>

I allready made this yesterday and also i tried 45 times over with changing something but no it doesn't changed anything. Package size chganged so seems linker doing something but my plugins or my code still doesn't work. What i must do ?, i'm really confused.

 

I finally achived catch stack trace here it is:

Code (CSharp):

1. AndroidPlayer(ADB@127.0.0.1:34999) NotSupportedException: Method body replaced by UnityLinker.exe with a NotSupportedException
2.   at System.Data.DataCommonEventSource.Trace (System.String message) [0x00000] in <00000000000000000000000000000000>:0
3.   at System.Data.Common.DbConnectionStringBuilder.Clear () [0x00000] in <00000000000000000000000000000000>:0
4.   at MySql.Data.MySqlClient.MySqlConnectionStringBuilder.Clear () [0x00000] in <00000000000000000000000000000000>:0
5.   at System.Data.Common.DbConnectionStringBuilder.set_ConnectionString (System.String value) [0x00000] in <00000000000000000000000000000000>:0
6.   at MySql.Data.MySqlClient.MySqlConnectionStringBuilder..ctor (System.String connStr) [0x00000] in <00000000000000000000000000000000>:0
7.   at MySql.Data.MySqlClient.MySqlConnection.set_ConnectionString (System.String value) [0x00000] in <00000000000000000000000000000000>:0
8.   at MySql.Data.MySqlClient.MySqlConnection..ctor (System.String connectionString) [0x00000] in <00000000000000000000000000000000>:0
9.   at ui_event_catcher.reconnect () [0x00000] in <00000000000000000000000000000000>:0
10.   at UnityEngine.Events.InvokableCall.Invoke () [0x00000] in <00000000000000000000000000000000>:0
11.   at UnityEngine.Events.UnityEvent.Invoke () [0x00000] in <00000000000000000000000000000000>:0
12.   at UnityEngine.UI.Button.Press () [0x00000] in <00000000000000000000000000000000>:0
13.   at UnityEngine.UI.Button.OnPointerClick (UnityEngine.EventSystems.PointerEventData eventData) [0x00000] in <00000000000000000000000000000000>:0
14.   at UnityEngine.EventSystems.ExecuteEvents.Execute (UnityEngine.EventSystems.IPointerClickHandler handler, UnityEngine.EventSystems.BaseEventData eventData) [0x00000] in <00000000000000000000000000000000>:0
15.   at UnityEngine.EventSystems.ExecuteEvents.Execute[T] (UnityEngine.GameObject target, UnityEngine.EventSystems.BaseEventData eventData, UnityEngine.EventSystems.ExecuteEvents+EventFunction`1[T1] functor) [0x00000] in <00000000000000000000000000000000>:0
16.   at UnityEngine.EventSystems.StandaloneInputModule.ProcessTouchPress (UnityEngine.EventSystems.PointerEventData pointerEvent, System.Boolean pressed, System.Boolean released) [0x00000] in <00000000000000000000000000000000>:0
17.   at UnityEngine.EventSystems.StandaloneInputModule.ProcessTouchEvents () [0x00000] in <00000000000000000000000000000000>:0
18.   at UnityEngine.EventSystems.StandaloneInputModule.Process () [0x00000] in <00000000000000000000000000000000>:0
19.   at UnityEngine.EventSystems.EventSystem.Update () [0x00000] in <00000000000000000000000000000000>:0
20. UnityEngine.DebugLogHandler:LogException(Exception, Object)
21. UnityEngine.Logger:LogException(Exception, Object)
22. UnityEngine.Debug:LogException(Exception)
23. UnityEngine.EventSystems.ExecuteEvents:Execute(GameObject, BaseEventData, EventFunction`1)
24. UnityEngine.EventSystems.StandaloneInputModule:ProcessTouchPress(PointerEventData, Boolean, Boolean)
25. UnityEngine.EventSystems.StandaloneInputModule:ProcessTouchEvents()
26. UnityEngine.EventSystems.StandaloneInputModule:Process()
27. UnityEngine.EventSystems.EventSystem:Update()
28. (Filename: currently not available on il2cpp Line: -1)
29.  
30.  
31.  

Can you help me please ?

 

Hi again i added line but still not working. Also i guess nothing doesn't changed yet. But package size increased. So i think we are going to solve this issue.
here is new link.xml:

Code (CSharp):

1.  
2. <linker>
3.     <assembly fullname="MySql.Data" preserve="all">
4.         <type fullname="*" preserve="all"/>
5.     </assembly>
6.     <assembly fullname="Newtonsoft.Json" preserve="all">
7.         <type fullname="*" preserve="all"/>
8.     </assembly>
9.     <assembly fullname="Assembly-CSharp" preserve="all">
10.         <type fullname="*" preserve="all"/>
11.     </assembly>
12.     <assembly fullname="System" preserve="all"/>
13.     <assembly fullname="System.Data" preserve="all"/>
14.     <assembly fullname="UnityEngine.CoreModule" preserve="all"/>
15.     <assembly fullname="mscorlib" preserve="all"/>
16. </linker>
17.  

here is new stack trace:

Code (CSharp):

1. AndroidPlayer(ADB@127.0.0.1:34999) NotSupportedException: Method body replaced by UnityLinker.exe with a NotSupportedException
2.   at System.Data.DataCommonEventSource.Trace (System.String message) [0x00000] in <00000000000000000000000000000000>:0
3.   at System.Data.Common.DbConnectionStringBuilder.Clear () [0x00000] in <00000000000000000000000000000000>:0
4.   at MySql.Data.MySqlClient.MySqlConnectionStringBuilder.Clear () [0x00000] in <00000000000000000000000000000000>:0
5.   at System.Data.Common.DbConnectionStringBuilder.set_ConnectionString (System.String value) [0x00000] in <00000000000000000000000000000000>:0
6.   at MySql.Data.MySqlClient.MySqlConnectionStringBuilder..ctor (System.String connStr) [0x00000] in <00000000000000000000000000000000>:0
7.   at MySql.Data.MySqlClient.MySqlConnection.set_ConnectionString (System.String value) [0x00000] in <00000000000000000000000000000000>:0
8.   at MySql.Data.MySqlClient.MySqlConnection..ctor (System.String connectionString) [0x00000] in <00000000000000000000000000000000>:0
9.   at ui_event_catcher.reconnect () [0x00000] in <00000000000000000000000000000000>:0
10.   at UnityEngine.Events.InvokableCall.Invoke () [0x00000] in <00000000000000000000000000000000>:0
11.   at UnityEngine.Events.UnityEvent.Invoke () [0x00000] in <00000000000000000000000000000000>:0
12.   at UnityEngine.UI.Button.Press () [0x00000] in <00000000000000000000000000000000>:0
13.   at UnityEngine.UI.Button.OnPointerClick (UnityEngine.EventSystems.PointerEventData eventData) [0x00000] in <00000000000000000000000000000000>:0
14.   at UnityEngine.EventSystems.ExecuteEvents.Execute (UnityEngine.EventSystems.IPointerClickHandler handler, UnityEngine.EventSystems.BaseEventData eventData) [0x00000] in <00000000000000000000000000000000>:0
15.   at UnityEngine.EventSystems.ExecuteEvents.Execute[T] (UnityEngine.GameObject target, UnityEngine.EventSystems.BaseEventData eventData, UnityEngine.EventSystems.ExecuteEvents+EventFunction`1[T1] functor) [0x00000] in <00000000000000000000000000000000>:0
16.   at UnityEngine.EventSystems.StandaloneInputModule.ProcessTouchPress (UnityEngine.EventSystems.PointerEventData pointerEvent, System.Boolean pressed, System.Boolean released) [0x00000] in <00000000000000000000000000000000>:0
17.   at UnityEngine.EventSystems.StandaloneInputModule.ProcessTouchEvents () [0x00000] in <00000000000000000000000000000000>:0
18.   at UnityEngine.EventSystems.StandaloneInputModule.Process () [0x00000] in <00000000000000000000000000000000>:0
19.   at UnityEngine.EventSystems.EventSystem.Update () [0x00000] in <00000000000000000000000000000000>:0
20. UnityEngine.DebugLogHandler:LogException(Exception, Object)
21. UnityEngine.Logger:LogException(Exception, Object)
22. UnityEngine.Debug:LogException(Exception)
23. UnityEngine.EventSystems.ExecuteEvents:Execute(GameObject, BaseEventData, EventFunction`1)
24. UnityEngine.EventSystems.StandaloneInputModule:ProcessTouchPress(PointerEventData, Boolean, Boolean)
25. UnityEngine.EventSystems.StandaloneInputModule:ProcessTouchEvents()
26. UnityEngine.EventSystems.StandaloneInputModule:Process()
27. UnityEngine.EventSystems.EventSystem:Update()
28. (Filename: currently not available on il2cpp Line: -1)
29.  
30.  
31.  

 

MySqlConnector 6.9 version working on .NET 4.5 version. But i have also older version for .NET 3.5. I tried it too.

 

I did. is there anything to i should do something or try something .?

 

Case : 1320392

 

Hı Josh;

I came back with detailed issue. After deep searching of all stack trace by one by i found the complete source of issue.

MySQLConnection is uses MySqlConnectionStringBuilder when connection is building, after building connection is calling MySqlConnectionStringBuilder.Clear(). The issue comes here. This is Also called IDictionary.Clear() from System.Collections.cll and mscorlib.dll.

IDictionary.Clear() methods throws NotSupportedException when it's readonly. I cannot change MySqlConnectionStringBuilder dictionary to editable. Method has only get; property.
So this issue always will come up. If an error occurs in the code, the codes below will be not read and execute. So if i can bypass the exception, the codes below from exception are will read and executed .?
If yes i think i can handle this with try catch am i wrong ?.

Also what happens during stripping assemblies to this error comes up. With stripping assemblies disabled MySqlConnection clearly call MySqlConnectionStringBuilder.Clear() with no error. I don't understand what stripping assemblies exactly doing.

This is MySqlConnectionStringBuilder class's document:
https://dev.mysql.com/doc/dev/conne..._MySqlClient_MySqlConnectionStringBuilder.htm

This is MySqlConnectionStringBuilder.Clear method's document:
https://dev.mysql.com/doc/dev/conne...Client_MySqlConnectionStringBuilder_Clear.htm

This is IDictionary.Clear method's document !! SOURCE OF ERROR !!:
https://docs.microsoft.com/en-us/do...=net-5.0#System_Collections_IDictionary_Clear

 

Have the same exception when using DataTable.

Code (CSharp):

1.  var dataTable = new DataTable();
2. dataTable.Columns.Add("result", typeof(string), input);

Tryied add link. xml, but still have error

<?xml version="1.0" encoding="utf-8" ?>

<linker>

   <assembly fullname="System.Data" preserve="all"/>

</linker>

Spoiler: Error

Method body replaced by UnityLinker.exe with a NotSupportedException at System.Data.DataCommonEventSource.ExitScope (System.Int64 scopeId) [0x00000] in <00000000000000000000000000000000>:0
03-18 13:04:58.503 29905 30068 E Unity : at System.Data.DataColumn.set_Expression (System.String value) [0x00000] in <00000000000000000000000000000000>:0
03-18 13:04:58.503 29905 30068 E Unity : at System.Data.DataColumn..ctor (System.String columnName, System.Type dataType, System.String expr, System.Data.MappingType type) [0x00000] in <00000000000000000000000000000000>:0
03-18 13:04:58.503 29905 30068 E Unity : at System.Data.DataColumn..ctor (System.String columnName, System.Type dataType, System.String expr) [0x00000] in <00000000000000000000000000000000>:0
03-18 13:04:58.503 29905 30068 E Unity : at System.Data.DataColumnCollection.Add (System.String columnName, System.Type type, System.String expression) [0x00000] in <00000000000000000000000000000000>:0

 

Hi,
I have the same problem as you. Did you manage to fix the problem?
Thank you

 

I have this error as well. Any updates?

I get the stack trace below. The similarity seems to be these are both `EventSource` subclasses, with a method having the `EventAttribute` attribute.
I get this in Unity 2021.1 and 2021.2 when using IL2CPP, with API Compatibility Level set to .NET Standard 2.1, or .NET Framework

Code (CSharp):

1. System.NotSupportedException: Method body replaced by UnityLinker.exe with a NotSupportedException
2.   at Microsoft.AspNetCore.Http.Connections.Internal.HttpConnectionsEventSource.ConnectionStart (System.String connectionId) [0x00000] in <00000000000000000000000000000000>:0
3.   at Microsoft.AspNetCore.Http.Connections.Internal.HttpConnectionManager.CreateConnection (System.IO.Pipelines.PipeOptions transportPipeOptions, System.IO.Pipelines.PipeOptions appPipeOptions) [0x00000] in <00000000000000000000000000000000>:0
4.   at Microsoft.AspNetCore.Http.Connections.Internal.HttpConnectionDispatcher.CreateConnection (Microsoft.AspNetCore.Http.Connections.HttpConnectionDispatcherOptions options) [0x00000] in <00000000000000000000000000000000>:0
5.   at Microsoft.AspNetCore.Http.Connections.Internal.HttpConnectionDispatcher.ProcessNegotiate (Microsoft.AspNetCore.Http.HttpContext context, Microsoft.AspNetCore.Http.Connections.HttpConnectionDispatcherOptions options, Microsoft.AspNetCore.Http.Connections.Internal.ConnectionLogScope logScope) [0x00000] in <00000000000000000000000000000000>:0
6.   at System.Runtime.CompilerServices.AsyncTaskMethodBuilder.Start[TStateMachine] (TStateMachine& stateMachine) [0x00000] in <00000000000000000000000000000000>:0
7.   at Microsoft.AspNetCore.Http.Connections.Internal.HttpConnectionDispatcher.ProcessNegotiate (Microsoft.AspNetCore.Http.HttpContext context, Microsoft.AspNetCore.Http.Connections.HttpConnectionDispatcherOptions options, Microsoft.AspNetCore.Http.Connections.Internal.ConnectionLogScope logScope) [0x00000] in <00000000000000000000000000000000>:0
8.   at Microsoft.AspNetCore.Http.Connections.Internal.HttpConnectionDispatcher.ExecuteNegotiateAsync (Microsoft.AspNetCore.Http.HttpContext context, Microsoft.AspNetCore.Http.Connections.HttpConnectionDispatcherOptions options) [0x00000] in <00000000000000000000000000000000>:0
9.   at System.Runtime.CompilerServices.AsyncTaskMethodBuilder.Start[TStateMachine] (TStateMachine& stateMachine) [0x00000] in <00000000000000000000000000000000>:0
10.   at Microsoft.AspNetCore.Http.Connections.Internal.HttpConnectionDispatcher.ExecuteNegotiateAsync (Microsoft.AspNetCore.Http.HttpContext context, Microsoft.AspNetCore.Http.Connections.HttpConnectionDispatcherOptions options) [0x00000] in <00000000000000000000000000000000>:0
11.   at Microsoft.AspNetCore.Builder.RouterMiddleware.Invoke (Microsoft.AspNetCore.Http.HttpContext httpContext) [0x00000] in <00000000000000000000000000000000>:0
12.   at System.Runtime.CompilerServices.AsyncTaskMethodBuilder.Start[TStateMachine] (TStateMachine& stateMachine) [0x00000] in <00000000000000000000000000000000>:0
13.   at Microsoft.AspNetCore.Builder.RouterMiddleware.Invoke (Microsoft.AspNetCore.Http.HttpContext httpContext) [0x00000] in <00000000000000000000000000000000>:0
14.   at Microsoft.AspNetCore.WebSockets.WebSocketMiddleware.Invoke (Microsoft.AspNetCore.Http.HttpContext context) [0x00000] in <00000000000000000000000000000000>:0
15.   at Microsoft.AspNetCore.Hosting.Internal.RequestServicesContainerMiddleware.Invoke (Microsoft.AspNetCore.Http.HttpContext httpContext) [0x00000] in <00000000000000000000000000000000>:0
16.   at Microsoft.AspNetCore.Server.Kestrel.Core.Internal.Http.HttpProtocol.ProcessRequests[TContext] (Microsoft.AspNetCore.Hosting.Server.IHttpApplication`1[TContext] application) [0x00000] in <00000000000000000000000000000000>:0
17.   at System.Threading.ExecutionContext.RunInternal (System.Threading.ExecutionContext executionContext, System.Threading.ContextCallback callback, System.Object state, System.Boolean preserveSyncCtx) [0x00000] in <00000000000000000000000000000000>:0
18.   at System.Runtime.CompilerServices.AsyncMethodBuilderCore+MoveNextRunner.Run () [0x00000] in <00000000000000000000000000000000>:0
19.   at System.Threading.ExecutionContext.RunInternal (System.Threading.ExecutionContext executionContext, System.Threading.ContextCallback callback, System.Object state, System.Boolean preserveSyncCtx) [0x00000] in <00000000000000000000000000000000>:0
20.   at System.Threading.ThreadPoolWorkQueue.Dispatch () [0x00000] in <00000000000000000000000000000000>:0
21. --- End of stack trace from previous location where exception was thrown ---
22.  
23.   at Microsoft.AspNetCore.Http.Connections.Internal.HttpConnectionDispatcher.ExecuteNegotiateAsync (Microsoft.AspNetCore.Http.HttpContext context, Microsoft.AspNetCore.Http.Connections.HttpConnectionDispatcherOptions options) [0x00000] in <00000000000000000000000000000000>:0
24.   at System.Runtime.CompilerServices.AsyncTaskMethodBuilder.Start[TStateMachine] (TStateMachine& stateMachine) [0x00000] in <00000000000000000000000000000000>:0
25.   at Microsoft.AspNetCore.Http.Connections.Internal.HttpConnectionDispatcher.ExecuteNegotiateAsync (Microsoft.AspNetCore.Http.HttpContext context, Microsoft.AspNetCore.Http.Connections.HttpConnectionDispatcherOptions options) [0x00000] in <00000000000000000000000000000000>:0
26.   at Microsoft.AspNetCore.Builder.RouterMiddleware.Invoke (Microsoft.AspNetCore.Http.HttpContext httpContext) [0x00000] in <00000000000000000000000000000000>:0
27.   at System.Runtime.CompilerServices.AsyncTaskMethodBuilder.Start[TStateMachine] (TStateMachine& stateMachine) [0x00000] in <00000000000000000000000000000000>:0
28.   at Microsoft.AspNetCore.Builder.RouterMiddleware.Invoke (Microsoft.AspNetCore.Http.HttpContext httpContext) [0x00000] in <00000000000000000000000000000000>:0
29.   at Microsoft.AspNetCore.WebSockets.WebSocketMiddleware.Invoke (Microsoft.AspNetCore.Http.HttpContext context) [0x00000] in <00000000000000000000000000000000>:0
30.   at Microsoft.AspNetCore.Hosting.Internal.RequestServicesContainerMiddleware.Invoke (Microsoft.AspNetCore.Http.HttpContext httpContext) [0x00000] in <00000000000000000000000000000000>:0
31.   at Microsoft.AspNetCore.Server.Kestrel.Core.Internal.Http.HttpProtocol.ProcessRequests[TContext] (Microsoft.AspNetCore.Hosting.Server.IHttpApplication`1[TContext] application) [0x00000] in <00000000000000000000000000000000>:0
32.   at System.Threading.ExecutionContext.RunInternal (System.Threading.ExecutionContext executionContext, System.Threading.ContextCallback callback, System.Object state, System.Boolean preserveSyncCtx) [0x00000] in <00000000000000000000000000000000>:0
33.   at System.Runtime.CompilerServices.AsyncMethodBuilderCore+MoveNextRunner.Run () [0x00000] in <00000000000000000000000000000000>:0
34.   at System.Threading.ExecutionContext.RunInternal (System.Threading.ExecutionContext executionContext, System.Threading.ContextCallback callback, System.Object state, System.Boolean preserveSyncCtx) [0x00000] in <00000000000000000000000000000000>:0
35.   at System.Threading.ThreadPoolWorkQueue.Dispatch () [0x00000] in <00000000000000000000000000000000>:0
36. --- End of stack trace from previous location where exception was thrown ---
37.  
38.   at Microsoft.AspNetCore.Builder.RouterMiddleware.Invoke (Microsoft.AspNetCore.Http.HttpContext httpContext) [0x00000] in <00000000000000000000000000000000>:0
39.   at System.Runtime.CompilerServices.AsyncTaskMethodBuilder.Start[TStateMachine] (TStateMachine& stateMachine) [0x00000] in <00000000000000000000000000000000>:0
40.   at Microsoft.AspNetCore.Builder.RouterMiddleware.Invoke (Microsoft.AspNetCore.Http.HttpContext httpContext) [0x00000] in <00000000000000000000000000000000>:0
41.   at Microsoft.AspNetCore.WebSockets.WebSocketMiddleware.Invoke (Microsoft.AspNetCore.Http.HttpContext context) [0x00000] in <00000000000000000000000000000000>:0
42.   at Microsoft.AspNetCore.Hosting.Internal.RequestServicesContainerMiddleware.Invoke (Microsoft.AspNetCore.Http.HttpContext httpContext) [0x00000] in <00000000000000000000000000000000>:0
43.   at Microsoft.AspNetCore.Server.Kestrel.Core.Internal.Http.HttpProtocol.ProcessRequests[TContext] (Microsoft.AspNetCore.Hosting.Server.IHttpApplication`1[TContext] application) [0x00000] in <00000000000000000000000000000000>:0
44.   at System.Threading.ExecutionContext.RunInternal (System.Threading.ExecutionContext executionContext, System.Threading.ContextCallback callback, System.Object state, System.Boolean preserveSyncCtx) [0x00000] in <00000000000000000000000000000000>:0
45.   at System.Runtime.CompilerServices.AsyncMethodBuilderCore+MoveNextRunner.Run () [0x00000] in <00000000000000000000000000000000>:0
46.   at System.Threading.ExecutionContext.RunInternal (System.Threading.ExecutionContext executionContext, System.Threading.ContextCallback callback, System.Object state, System.Boolean preserveSyncCtx) [0x00000] in <00000000000000000000000000000000>:0
47.   at System.Threading.ThreadPoolWorkQueue.Dispatch () [0x00000] in <00000000000000000000000000000000>:0
48. --- End of stack trace from previous location where exception was thrown ---
49.