Resolved Loading XML in Mono Build fails, IL2CPP + Editor work

Hi,

i have an strange issue, if i build my project in mono, i can't load an xml file which worked two days ago.
Than i built it with IL2CPP and i can load there the XML file. I also removed the Library folder.

Im getting this error:

Code (CSharp):

1. System.MissingMethodException: Default constructor not found for type System.Diagnostics.SystemDiagnosticsSection
2.   at System.RuntimeType.CreateInstanceMono (System.Boolean nonPublic) [0x0007b] in <f3b441e34e334f86b90d32f3b50d01cd>:0
3.   at System.RuntimeType.CreateInstanceSlow (System.Boolean publicOnly, System.Boolean skipCheckThis, System.Boolean fillCache, System.Threading.StackCrawlMark& stackMark) [0x00009] in <f3b441e34e334f86b90d32f3b50d01cd>:0
4.   at System.RuntimeType.CreateInstanceDefaultCtor (System.Boolean publicOnly, System.Boolean skipCheckThis, System.Boolean fillCache, System.Threading.StackCrawlMark& stackMark) [0x00027] in <f3b441e34e334f86b90d32f3b50d01cd>:0
5.   at System.Activator.CreateInstance (System.Type type, System.Boolean nonPublic) [0x0002c] in <f3b441e34e334f86b90d32f3b50d01cd>:0
6.   at System.Configuration.ConfigInfo.CreateInstance () [0x00026] in <009ae07fc98f4cf182f2f0676c4c5dd9>:0
7.   at System.Configuration.SectionInfo.CreateInstance () [0x00000] in <009ae07fc98f4cf182f2f0676c4c5dd9>:0
8.   at System.Configuration.Configuration.GetSectionInstance (System.Configuration.SectionInfo config, System.Boolean createDefaultInstance) [0x0001c] in <009ae07fc98f4cf182f2f0676c4c5dd9>:0
9.   at System.Configuration.ConfigurationSectionCollection.get_Item (System.String name) [0x0002c] in <009ae07fc98f4cf182f2f0676c4c5dd9>:0
10.   at System.Configuration.Configuration.GetSection (System.String sectionName) [0x0001e] in <009ae07fc98f4cf182f2f0676c4c5dd9>:0
11.   at System.Configuration.ClientConfigurationSystem.System.Configuration.Internal.IInternalConfigSystem.GetSection (System.String configKey) [0x00006] in <009ae07fc98f4cf182f2f0676c4c5dd9>:0
12.   at System.Configuration.ConfigurationManager.GetSection (System.String sectionName) [0x00005] in <009ae07fc98f4cf182f2f0676c4c5dd9>:0
13.   at System.Configuration.PrivilegedConfigurationManager.GetSection (System.String sectionName) [0x00000] in <5ebb2774be7b4e249853ef7dd3b06add>:0
14.   at System.Diagnostics.DiagnosticsConfiguration.GetConfigSection () [0x00000] in <5ebb2774be7b4e249853ef7dd3b06add>:0
15.   at System.Diagnostics.DiagnosticsConfiguration.Initialize () [0x0002a] in <5ebb2774be7b4e249853ef7dd3b06add>:0
16.   at System.Diagnostics.DiagnosticsConfiguration.get_SwitchSettings () [0x00000] in <5ebb2774be7b4e249853ef7dd3b06add>:0
17.   at System.Diagnostics.Switch.InitializeConfigSettings () [0x00013] in <5ebb2774be7b4e249853ef7dd3b06add>:0
18.   at System.Diagnostics.Switch.InitializeWithStatus () [0x00046] in <5ebb2774be7b4e249853ef7dd3b06add>:0
19.   at System.Diagnostics.Switch.get_SwitchSetting () [0x0000a] in <5ebb2774be7b4e249853ef7dd3b06add>:0
20.   at System.Diagnostics.BooleanSwitch.get_Enabled () [0x00000] in <5ebb2774be7b4e249853ef7dd3b06add>:0
21.   at System.Xml.Serialization.TempAssembly.LoadGeneratedAssembly (System.Type type, System.String defaultNamespace, System.Xml.Serialization.XmlSerializerImplementation& contract) [0x0001a] in <bab9525fff6b49829c609a2865c9287a>:0
22.   at System.Xml.Serialization.XmlSerializer..ctor (System.Type type, System.String defaultNamespace) [0x0007e] in <bab9525fff6b49829c609a2865c9287a>:0
23.   at System.Xml.Serialization.XmlSerializer..ctor (System.Type type) [0x00000] in <bab9525fff6b49829c609a2865c9287a>:0
24.   at BeardedMonkeys.Utils.XmlDeserializeFile[T] (System.String serializedObject) [0x00001] in E:\Projekte\Unity\RaceProject\Assets\Scripts\Utility\Utils.cs:361
25.   at BeardedMonkeys.MapManager.Initialize () [0x000a3] in E:\Projekte\Unity\RaceProject\Assets\Scripts\Map\MapManager.cs:52
26.  
27. CreateInstanceMono(:0)

I can also load the XML file in the Editor Window. I dont know what changed a few days ago...

It seems that someone has a same issue: https://issuetracker.unity3d.com/is...en-using-preserve-attribute-with-mono-backend

 

Potentially it is code stripping happening at the IL2CPP link stage. Put a constructor for

System.Diagnostics.SystemDiagnosticsSection

somewhere in your code and see if the error changes when you run that code.

 

Yes code stripping was the problem, i disabled it and now i can build again in mono. Thank you.