Method X from Type Y in Assembly Z does not have an Implementation

.net asp.net-mvc-3 typeloadexception
glosrob picture glosrob · Jul 10, 2012 · Viewed 7.8k times · Source

I am very confused!

I have a solution that, when published and deployed gives the me the following error:

Exception information: 
Exception type: HttpException 
Exception message: Method 'GetDemosSubsidiaryById' in type 'DG.Crm.DataAccess.Crm2011WS.Repositories.ReferenceEntitiesRepository' from assembly 'DG.Crm.DataAccess.Crm2011WS, Version=1.0.0.0, Culture=neutral, PublicKeyToken=null' does not have an implementation.
<stack trace>

Obviously it builds fine and the method is implemented and definitely exists in the library. I have used reflector to check the deployed DLLs and I can't see anything out of the ordinary there either - classes exist, types are there, method is implemented. The particular method it is complaining about isn't even called, either.

I have removed all references and readded them in the solution.

I have recreated DG.Crm.DataAccess.Crm2011WS.Repositories.ReferenceEntitiesRepository by using the the 'Implement Interface' shortcut in Visual Studio.

The solution loads and works fine from within Visual Studio.

What am I missing here or where else can I look for more information?

edit to add on solution structure:

enter image description here

The 2011WS library implements interfaces that live in the Common library. Both are then referenced by the WebApps MVC web application.

Answer

scott pelger picture scott pelger · Sep 6, 2013

Just an FYI...i had this same exact error. in my case it turned out to be assembly B being referenced by assembly A that was not in the GAC. the error indicated a problem with assembly A so was a bit misleading.

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