Missing assembly after upgrading to 4.1

I've upgraded my 4.0 project to 4.1 and when trying to browse to the site the following error is being displayed. The version of Telerik.OpenAccess.dll that the site is referencing is 2011.1.411.2.

Could not load file or assembly 'Telerik.OpenAccess.Config, Version=1.0.0.0, Culture=neutral, PublicKeyToken=7ce17eeaf1d59342' or one of its dependencies. The system cannot find the file specified.

Dear Suzanne

This might not help but I had trouble often with missing aaa.dll or one of its dependencies. Fictional dll and version numbers

Lets say you have telerik
a.dll versin 2010.3.111.4 and it needs
a1.dll 2010.3.111.4 as well as
a2.dll 2010.3.111.4

When you up upgrade
a.dll to 2011.1.111.1 you also needed to upgrade
a1.dll to 2011.1.111.1 as well as
a2.dll to 2011.1.111.1

No to me once in a while it seemd (if I rember correct) that when you upgrade to

a.dll 2011.2.889.1 you it would no longer depend on a2.dll

So I uploaded the
a.dll 2011.2.889.1 as well as the new
a1.dll 2011.2.889.1

Since there was no

a2.ddl with version 2011.2.889.1 anymore the old
a2.dll with version 2011.1.111.1 would not be overritten. This dll which is no longer needed would still be looking for a.dll with version 2011.1.111.1 which of course was replaced with the new version a.dll 2011.2.889.1 and would trow an error.

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It might be wrong what I am writing but I allways checke bottom down if all dependencies were on the server missing sometime older leftover ^child dlls' looking for parent dlls .

If this is wrong anybody correct me. Otherwise it might be a starting point to see if any of your dll on the server is missing an assambly.


This tool will help you http://checkasm.booring.net/ install it and drag an dll into the window and you see what its dependencies are. Again not only look top down, but bottom up as well.

Markus