Entity Framework 5 - Could not load file or assembly EntityFramework, Version=5.0.0.0

c#, entity-framework, entity-framework-ctp5

Solution

Run the fusion log tool as suggested by the error message to get more information about where the runtime is looking for the dll's so you get a better idea of why it is failing.

There is a good article about Fusion-loggning by Scott Hanselman, how you enable it etc, then just run fuslogw as admin from command prompt.

Update

The fusion log shows us where the runtime is looking for your DLLs, in this case Budget.Data, which it looks for in:

bin/Release/Budget.Data.DLL 
bin/Release/Budget.Data/Budget.Data.DLL
bin/Release/Budget.Data.EXE
bin/Release/Budget.Data/Budget.Data.EXE

Can you verify that the DLL is in fact in one of these directories ? If it is check the target framework on your DLL (check the project properties) ? Is the target framework compatible with EF 5.0 ? What is the target framework of your other assemblies (if any)

Problem

I am trying to use Entity Framework 5 for my project but I seem to be having some issue getting the assembly installed to comply. And since I installed this initially using nuget, I am not certain what I need to do to cause this to work as I expect . Any help on what I need to do to fix this problem please? *System.IO.FileNotFoundException : Could not load file or assembly EntityFramework, Version=5.0.0.0, Culture=Neutral, PublicKeyToken=b77a5c561934e089' or one of it's dependencies The System cannot find the file specified.WRN: Assembly binding logging is turned OFF. To enable assembly bind failure logging, set the registy value . . . * by using fusion log, i got this ``` *** Assembly Binder Log Entry (7/17/2012 @ 9:29:09 PM) *** The operation failed. Bind result: hr = 0x80070002. The system cannot find the file specified. Assembly manager loaded from: C:\Windows\Microsoft.NET\Framework\v4.0.30319\clr.dll Running under executable C:\PROGRAM FILES (X86)\MICROSOFT VISUAL STUDIO 11.0\COMMON7\IDE\COMMONEXTENSIONS\MICROSOFT\TESTWINDOW\vstest.executionengine.x86.exe --- A detailed error log follows. === Pre-bind state information === LOG: User = WORKALOT\Tokorie LOG: DisplayName = Budget.Data, Version=0.0.0.0, Culture=neutral, PublicKeyToken=null (Fully-specified) LOG: Appbase = file:///C:/Development/Summer2012BudgetApp/Budget.Service.Test/bin/Release LOG: Initial PrivatePath = NULL LOG: Dynamic Base = NULL LOG: Cache Base = NULL LOG: AppName = vstest.executionengine.x86.exe Calling assembly : Budget.Lib, Version=1.0.0.0, Culture=neutral, PublicKeyToken=null. === LOG: This bind starts in default load context. LOG: Using application configuration file: C:\PROGRAM FILES (X86)\MICROSOFT VISUAL STUDIO 11.0\COMMON7\IDE\COMMONEXTENSIONS\MICROSOFT\TESTWINDOW\vstest.executionengine.x86.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: Policy not being applied to reference at this time (private, custom, partial, or location-based assembly bind). LOG: Attempting download of new URL file:///C:/Development/Summer2012BudgetApp/Budget.Service.Test/bin/Release/Budget.Data.DLL. LOG: Attempting download of new URL file:///C:/Development/Summer2012BudgetApp/Budget.Service.Test/bin/Release/Budget.Data/Budget.Data.DLL. LOG: Attempting download of new URL file:///C:/Development/Summer2012BudgetApp/Budget.Service.Test/bin/Release/Budget.Data.EXE. LOG: Attempting download of new URL file:///C:/Development/Summer2012BudgetApp/Budget.Service.Test/bin/Release/Budget.Data/Budget.Data.EXE. LOG: All probing URLs attempted and failed. ```

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