Vs update result in System.TypeLoadException

问题:

I am developping a windows phone 8.1 sdk
When I use vs 2013 update 3,the code works and i can run my demo.
but,yesterday,I update my vs 2013 to update 4,then throw a System.TypeLoadException
code details below:

var swapChainPanel = new SwapChainPanel();
Children.Add(swapChainPanel);
var res = new CXMapResource("", "");
cxEngine = new CXMapEngine(res);

Type CXMapResource is a windows runtime component type written by c++
and it is the first winrt type I load in my code
I set a break point before this line,it goes here,and then continue,then crash,
output:

A first chance exception of type 'System.TypeLoadException' occurred in Com.AMap.winmd
A first chance exception of type 'System.Exception' occurred in WP8.1Demo.ni.EXE

Update at 2014 11 18 16：08

System.TypeLoadException was unhandled by user code
  HResult=-2146233054
  Message=Requested Windows Runtime type 'WinRTDXMapLib.CXMapResource' is not registered.
  Source=mscorlib
  TypeName=WinRTDXMapLib.CXMapResource
  StackTrace:
       at System.StubHelpers.StubHelpers.GetWinRTFactoryObject(IntPtr pCPCMD)
       at WinRTDXMapLib.CXMapResource..ctor(String EngineResourcePath, String ShaderResourcePath)
       at Com.AMap.Maps.Core.AmapSharpEngine..ctor()
       at Com.AMap.Api.Maps.AMapControl..ctor()
       at WP8._1Demo.MainPage..ctor()
       at WP8._1Demo.WP8_1Demo_XamlTypeInfo.XamlTypeInfoProvider.Activate_0_MainPage()
       at WP8._1Demo.WP8_1Demo_XamlTypeInfo.XamlUserType.ActivateInstance()
  InnerException: System.Runtime.InteropServices.COMException
       HResult=-2147221164
       Message=Class not registered (Exception from HRESULT: 0x80040154 (REGDB_E_CLASSNOTREG))
       ErrorCode=-2147221164
       InnerException: 

I let my college run the same code in vs 2013 update 2,and it works
please tell me what might result in this problem,give me some advice,Thanks!!

---

It works now!

VS 2013 UPDATE5 CTP2

回答1:

Unfortunately we have the same problem with Update 4, this is probaly caused by referencing a winmd (C++) component. We have the problem with the SmoothStreaming SDK for Windows 8.1.

We have reached to Microsoft but no answer yet.

A colleague solved this problem by reinstalling Windows and Visual Studio. Then he updated to Update 3. (Just removing the update 4 didn't work for him) I rather avoid this 'solution' but if there is no hotfix next week, I probaly have to do these steps.

Update

Microsoft answered my issue that they will fix this problem in Update 5. https://connect.microsoft.com/VisualStudio/Feedback/Details/1036072

回答2:

Discussion about this problem:

Vs update result in System.TypeLoadException,was it a bug of VS?

VS2013 Update 4: TypeLoad Exception when referencing a winmd (C++) component

Connect: TypeLoadException when referencing a winmd C++ component

I am able to reproduce this problem at Connect:

you can't create a constructor with param in c++ winrt component

*****you can see my demo project here(attachment):*****
Vs update result in System.TypeLoadException