I un-installed Visual XSLT the other day and it broke my Visual Studio.NET install. When I created a new Windows Application, VS.NET would fail to display Form1 in the Form Designer with the exception “File or assembly name EnvDTE, or one of its dependencies, was not found.” I believe the problem was caused by un-installing Visual XSLT. Luckily the fix was simple.
Under the .NET Framework directory C:\WINDOWS\Microsoft.NET\Framework\v1.0.3705\ you will find the envdte.dll assembly. Copy this file to C:\Program Files\Microsoft Visual Studio .NET\Common7\IDE\ and you should be good to go. Of course you will need to adjust the drive letters based on your configuration.
This fix worked for me. Hopefully it will work for you if you are experiencing the same problem.
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