Jit debugger, .net exception (visual studio 2013)

Hi,

I'm facing an issue with my visual studio 2013 (ultimate & expression). Since 2 weeks I can't build any project without having a just in time debugger popup. It says "An unhandled Mictosoft .Net Framework exception occured in MyApp.exe [5892]"

If I open a new visual studio to debug this issue it says ;

An unhandled exception of type 'System.Exception' occurred in App6.exe Additional information: Class not registered (Exception from HRESULT: 0x80040154 (REGDB_E_CLASSNOTREG))

at

static void Main(string[] args)
{
    global::Windows.UI.Xaml.Application.Start((p) => new App());
}

And the output is

'App6.exe' (CLR v4.0.30319: App6.exe): Loaded 'C:\WINDOWS\Microsoft.Net\assembly\GAC_32\mscorlib\v4.0_4.0.0.0__b77a5c561934e089\mscorlib.dll'. Cannot find or open the PDB file. 'App6.exe' (CLR v4.0.30319: App6.exe): Loaded 'C:\users\david\documents\visual studio 2013\Projects\App6\App6\bin\Debug\AppX\App6.exe'. Symbols loaded. 'App6.exe' (CLR v4.0.30319: App6.exe): Loaded 'C:\WINDOWS\Microsoft.Net\assembly\GAC_MSIL\System.Runtime\v4.0_4.0.0.0__b03f5f7f11d50a3a\System.Runtime.dll'. Module was built without symbols. 'App6.exe' (CLR v4.0.30319: App6.exe): Loaded 'C:\WINDOWS\system32\WinMetadata\Windows.UI.Xaml.winmd'. Module was built without symbols. 'App6.exe' (CLR v4.0.30319: App6.exe): Loaded 'C:\WINDOWS\Microsoft.Net\assembly\GAC_MSIL\System.Runtime.InteropServices.WindowsRuntime\v4.0_4.0.0.0__b03f5f7f11d50a3a\System.Runtime.InteropServices.WindowsRuntime.dll'. Module was built without symbols. 'App6.exe' (CLR v4.0.30319: App6.exe): Loaded 'C:\WINDOWS\assembly\GAC_MSIL\Microsoft.VisualStudio.Debugger.Runtime\12.0.0.0__b03f5f7f11d50a3a\Microsoft.VisualStudio.Debugger.Runtime.dll'. The program '[5732] App6.exe' has exited with code 0 (0x0).

I have no clue how to fix it.

    I tried to uninstall and reinstall .net framework, (4.5.1 sdk + 4.5 sdk + multi targeting pack).
    I tried to install visual studio 2013 express

PS: it does not occurs with visual studio 2012. Also, this exception is thrown but the application is working fine after that.

Regards,