Unity 5.5.1f1 VS 2015 SyntaxTree.VisualStudio.Unity FileLoadException

Hi,

I get an error if I open a unity project with the new unity version and Visual Studio Tool For Unity 2.8.1.0:

This is the entry of the ActivityLog.xml from Visual Studio (German):
<entry>
<record>575</record>
<time>2017/02/10 11:01:44.655</time>
<type>Error</type>
<source>Editor or Editor Extension</source>
<description>System.IO.FileLoadException: Die Datei oder Assembly &quot;SyntaxTree.VisualStudio.Unity, Version=2.8.1.0, Culture=neutral, PublicKeyToken=31bf3856ad364e35&quot; oder eine Abh&#x00E4;ngigkeit davon wurde nicht gefunden. Die gefundene Manifestdefinition der Assembly stimmt nicht mit dem Assemblyverweis &#x00FC;berein. (Ausnahme von HRESULT: 0x80131040)&#x000D;&#x000A;Dateiname: &quot;SyntaxTree.VisualStudio.Unity, Version=2.8.1.0, Culture=neutral, PublicKeyToken=31bf3856ad364e35&quot;&#x000D;&#x000A; bei System.Reflection.RuntimeAssembly._nLoad(AssemblyName fileName, String codeBase, Evidence assemblySecurity, RuntimeAssembly locationHint, StackCrawlMark&amp; stackMark, IntPtr pPrivHostBinder, Boolean throwOnFileNotFound, Boolean forIntrospection, Boolean suppressSecurityChecks)&#x000D;&#x000A; bei System.Reflection.RuntimeAssembly.nLoad(AssemblyName fileName, String codeBase, Evidence assemblySecurity, RuntimeAssembly locationHint, StackCrawlMark&amp; stackMark, IntPtr pPrivHostBinder, Boolean throwOnFileNotFound, Boolean forIntrospection, Boolean suppressSecurityChecks)&#x000D;&#x000A; bei System.Reflection.RuntimeAssembly.InternalLoadAssemblyName(AssemblyName assemblyRef, Evidence assemblySecurity, RuntimeAssembly reqAssembly, StackCrawlMark&amp; stackMark, IntPtr pPrivHostBinder, Boolean throwOnFileNotFound, Boolean forIntrospection, Boolean suppressSecurityChecks)&#x000D;&#x000A; bei System.Reflection.Assembly.Load(AssemblyName assemblyRef)&#x000D;&#x000A; bei Microsoft.VisualStudio.ExtensibilityHosting.FaultCatchingAssemblyLoader.&lt;LoadAssembly&gt;b__15_0(AssemblyName assemblyNameParam)&#x000D;&#x000A; bei Microsoft.VisualStudio.ExtensibilityHosting.Utilities.SafeGetOrAdd[TKey,TValue](IDictionary`2 dictionary, TKey key, Object lockObj, Func`2 valueFactory)&#x000D;&#x000A; bei Microsoft.VisualStudio.ExtensibilityHosting.FaultCatchingAssemblyLoader.LoadAssembly(AssemblyName assemblyName)&#x000D;&#x000A; bei Microsoft.VisualStudio.Composition.Reflection.ResolverExtensions.Resolve(ConstructorRef constructorRef)&#x000D;&#x000A; bei Microsoft.VisualStudio.Composition.RuntimeComposition.RuntimePart.get_ImportingConstructor()&#x000D;&#x000A; bei Microsoft.VisualStudio.Composition.RuntimeExportProviderFactory.RuntimeExportProvider.RuntimePartLifecycleTracker.CreateValue()&#x000D;&#x000A; bei Microsoft.VisualStudio.Composition.ExportProvider.PartLifecycleTracker.Create()&#x000D;&#x000A; bei Microsoft.VisualStudio.Composition.ExportProvider.PartLifecycleTracker.MoveNext(PartLifecycleState nextState)&#x000D;&#x000A; bei Microsoft.VisualStudio.Composition.ExportProvider.PartLifecycleTracker.MoveToState(PartLifecycleState requiredState)&#x000D;&#x000A; bei Microsoft.VisualStudio.Composition.ExportProvider.PartLifecycleTracker.GetValueReadyToExpose()&#x000D;&#x000A; bei Microsoft.VisualStudio.Composition.RuntimeExportProviderFactory.RuntimeExportProvider.&lt;&gt;c__DisplayClass15_0.&lt;GetExportedValueHelper&gt;b__0()&#x000D;&#x000A;--- Ende der Stapel&#x00FC;berwachung vom vorhergehenden Ort, an dem die Ausnahme ausgel&#x00F6;st wurde ---&#x000D;&#x000A; bei Microsoft.VisualStudio.Composition.RuntimeExportProviderFactory.RuntimeExportProvider.&lt;&gt;c__DisplayClass15_0.&lt;GetExportedValueHelper&gt;b__0()&#x000D;&#x000A; bei Microsoft.VisualStudio.Composition.DelegateServices.&lt;&gt;c__DisplayClass2_0`1.&lt;As&gt;b__0()&#x000D;&#x000A; bei System.Lazy`1.CreateValue()&#x000D;&#x000A;--- Ende der Stapel&#x00FC;berwachung vom vorhergehenden Ort, an dem die Ausnahme ausgel&#x00F6;st wurde ---&#x000D;&#x000A; bei System.Runtime.ExceptionServices.ExceptionDispatchInfo.Throw()&#x000D;&#x000A; bei System.Lazy`1.get_Value()&#x000D;&#x000A; bei Microsoft.VisualStudio.Text.Tagging.Implementation.TagAggregator`1.GatherTaggers(ITextBuffer textBuffer)&#x000D;&#x000A;&#x000D;&#x000A;</description>
</entry>


I don't know where the extension is looking for this assembly or where it has to be.

Maybe someone could help here...

Regards
Stefan

 

I'm getting the same issue, with Unity 5.5.2f1 and Visual Studio Tools for Unity 2.8.2.0. I just upgraded from 5.5.0f3 and now can't use Visual Studio as it crashes when I start using it.

 

Same as Daveoh except Visual Studio Tools for Unity 2.8.1.0

 

Deleting cache helped me:
%localappdata%\Microsoft\VisualStudio\14.0\ComponentModelCache

 

Thanks frg_kova your suggestion of deleting the cache also helped me

 

Thanks @frg_kova

 

Thank you @frg_kova !!!

 

I fixed this by uninstalling "Microsoft Visual Studio 2015 Tools for Unity" from Programs and Features, and reinstalling an older version, but any version probably works. A new version has just been released too, which I have installed and am successfully using: https://marketplace.visualstudio.com/items?itemName=SebastienLebreton.VisualStudio2015ToolsforUnity

 

Thanks a lot to frg_kova
Reinstalling doesn't work for me, but clearing the ComponentModelCache Folder does the trick!

 

The same error occurs on Version 2.8.2.0, just released 3 days ago, for Unity Version 5.5.2f1. Reported to unity, but it was a month ago too, so apparently no desire to fix the bug....

Deleting the cache file in the directory:

%localappdata%\Microsoft\VisualStudio\14.0\ComponentModelCache

did fix it. But if it's that easy a fix, why not built into installer....

 

Got same issue with same fix on updating Unity Tools in VS - poor experience!

 

Thanks for the fix! Has anyone filed an official bug on this yet? This is really something Unity QA should catch and address. Upgrading shouldn't cause Visual Studio to crash with no obvious fix. That's a pretty big deal.

 

The tricks works wonder ! Thanks @frg_kova

 

Paste %localappdata%\Microsoft\VisualStudio\14.0\ComponentModelCache into File Explorer and delete all files in folder worked a treat, thanks @frg_kova!

 

Many thanks @frg_kova! Worked like a charm

 

Saved me hours of pain. Thanks @frg_kova

 

Thanks @frg_kova