Perché System.Core non riesce a caricare quando si aggiunge il supporto codificato dell'interfaccia utente per l'applicazione Silverlight 5?

Question

Sto riscontrando il seguente problema:

Tentativo di aggiungere supporto per la creazione di un test dell'interfaccia utente codificato per l'applicazione Silverlight 5 ([MSDN] [1]). Il primo passo è fare riferimento all'assembly Microsoft.VisualStudio.TestTools.UITest.Extension.SilverlightUIAutomationHelper.dll nel progetto Silverlight 5. Purtroppo, dopo è stato aggiunto il riferimento, i progetti si ferma a compilare con una serie di errori simili:

>

Error 25 Cannot resolve reference assemblies. Please check the reference assemblies. Could not load file or assembly 'System.Core, Version=5.0.5.0, Culture=neutral, PublicKeyToken=7cec85d7bea7798e' or one of its dependencies. The located assembly's manifest definition does not match the assembly reference. (Exception from HRESULT: 0x80131040) ....\ErrorReportDialog.xaml 


Looks like System.Core 5.0.5.0 fails to load, okay, debugging assemblies loading with Fuslogw produces two interesting logs: 

First log: 

> Assembly Binder Log Entry (04.03.2013 @ 14:07:49) 
The operation was successful. 
Bind result: hr = 0x0. The operation completed successfully. 
Assembly manager loaded from: C:\Windows\Microsoft.NET\Framework\v4.0.30319\clr.dll 
Running under executable C:\Windows\Microsoft.NET\Framework\v4.0.30319\MSBuild.exe 
A detailed error log follows. 
=== Pre-bind state information === 
LOG: DisplayName = System.Core, Version=5.0.5.0, Culture=neutral, PublicKeyToken=7cec85d7bea7798e 
(Fully-specified) 
LOG: Appbase = file:///C:/Windows/Microsoft.NET/Framework/v4.0.30319/ 
LOG: Initial PrivatePath = NULL 
LOG: Dynamic Base = NULL 
LOG: Cache Base = NULL 
LOG: AppName = MSBuild.exe 
Calling assembly : System.Windows, Version=5.0.5.0, Culture=neutral, PublicKeyToken=7cec85d7bea7798e. 
LOG: This bind starts in LoadFrom load context. 
WRN: Native image will not be probed in LoadFrom context. Native image will only be probed in default load context, like with Assembly.Load(). 
LOG: Using application configuration file: C:\Windows\Microsoft.NET\Framework\v4.0.30319\MSBuild.exe.Config 
LOG: Using host configuration file: 
LOG: Using machine configuration file from C:\Windows\Microsoft.NET\Framework\v4.0.30319\config\machine.config. 
LOG: Post-policy reference: System.Core, Version=5.0.5.0, Culture=neutral, PublicKeyToken=7cec85d7bea7798e 
LOG: Binding succeeds. Returns assembly from C:\Program Files (x86)\Reference Assemblies\Microsoft\Framework\Silverlight\v5.0\System.Core.dll. 
LOG: Assembly is loaded in LoadFrom load context. 

Looks like System.Core, Version=5.0.5.0, Culture=neutral, PublicKeyToken=7cec85d7bea7798e loads succesfully. 

But second log entry produces the following error: 

> Assembly Binder Log Entry (04.03.2013 @ 14:07:49) 
The operation failed. 
Bind result: hr = 0x80131040. No description available. 
Assembly manager loaded from: C:\Windows\Microsoft.NET\Framework\v4.0.30319\clr.dll 
Running under executable C:\Windows\Microsoft.NET\Framework\v4.0.30319\MSBuild.exe 
A detailed error log follows. 
Pre-bind state information 
LOG: DisplayName = System.Core, Version=2.0.5.0, Culture=neutral, PublicKeyToken=7cec85d7bea7798e 
(Fully-specified) 
LOG: Appbase = file:///C:/Windows/Microsoft.NET/Framework/v4.0.30319/ 
LOG: Initial PrivatePath = NULL 
LOG: Dynamic Base = NULL 
LOG: Cache Base = NULL 
LOG: AppName = MSBuild.exe 
Calling assembly : Microsoft.VisualStudio.TestTools.UITest.Extension.SilverlightUIAutomationHelper, Version=10.0.30319.381, Culture=neutral, PublicKeyToken=b03f5f7f11d50a3a. 
LOG: This bind starts in default load context. 
LOG: Using application configuration file: C:\Windows\Microsoft.NET\Framework\v4.0.30319\MSBuild.exe.Config 
LOG: Using host configuration file: 
LOG: Using machine configuration file from C:\Windows\Microsoft.NET\Framework\v4.0.30319\config\machine.config. 
LOG: Redirect found in application configuration file: 2.0.5.0 redirected to 5.0.5.0. 
LOG: Post-policy reference: System.Core, Version=5.0.5.0, Culture=neutral, PublicKeyToken=7cec85d7bea7798e 
LOG: The same bind was seen before, and was failed with hr = 0x80131040. 
ERR: Unrecoverable error occurred during pre-download check (hr = 0x80131040). 

Sembra Microsoft.VisualStudio.TestTools.UITest.Extension.SilverlightUIAutomationHelper.dll tenta di caricare System.Core, Version = 2.0.5.0, Culture = neutral, PublicKeyToken = 7cec85d7bea7798e, ma viene reindirizzato a System.Core, Versione = 5.0.5.0, Culture = neutral, PublicKeyToken = 7cec85d7bea7798e (già caricato dal 1 ° registro) e continua a fallire caricare.

Can anyone provide some insight on how to further debug this problem? I'm compiling Silverlight projects for AnyCpu platform. 


    [1]: http://msdn.microsoft.com/en-us/library/gg413374.aspx 

Answer 1

Per confermare la versione di System.Core richiesto dalla SilverlightUIAuthomationHelper effettuare le seguenti operazioni:

1. trovare la dll SilverlightUIAuthomationHelper riferimento sul disco.
2. caricarlo in qualsiasi disassemblatore/riflettore - ad esempio dotPeek o Reflector.
3. versioni di controllo delle assemblee di riferimento - System.Core deve essere 2.0.5.0 nella versione di SilverlightUIAuthomationHelper

Possibili soluzioni:

1. aggiornamento SilverlightUIAuthomationHelper alla nuova versione (link nel Passant commento Hans) che fa riferimento alla nuova dll System.Core (versione 5.0.5.0)
2. Poiché fuslogvw dice che il reindirizzamento da 2.0.5.0 a 5.0.5.0 si trova nel file di configurazione dell'applicazione: provare a trovare e rimuovere questo reindirizzamento (details here). Ma è molto probabile che qualcosa si spezzerà.