I am currently working on a new version of MZ-Tools and yesterday I updated its build script. When running it, to my surprise, I found the following error in the step that verifies the assembly with the peverify.exe tool after the obfuscation step:

Error 0x80070002 “The system cannot find the file specified”

After diagnosing the problem with the Assembly Binding Log Viewer, I found that the file in question was the Microsoft.VisualStudio.Data.Interop.dll assembly that this version of MZ-Tools will reference for one of its features. This file, on the contrary to others such as Microsoft.VisualStudio.Shell.Interop.8.0.dll, does not reside on the Global Assembly Cache (GAC) and, as any Visual Studio assembly, should not be distributed, the VS IDE will find it. However, when using the peverify.exe tool, that referenced assembly is not found.

Fortunately Microsoft has ways to fix for all these problems through a .config file. Long time ago I posted how to fix the problem PEVerify.exe causes problem with EnvDTE.dll verifying Visual Studio 2005 add-ins and this new article explains how to fix this other problem:

PRB: PEVerify.exe causes problem verifying add-in with referenced assemblies from Visual Studio not in the GAC
http://www.mztools.com/articles/2009/MZ2009013.aspx