When I retract or deploy a SP2010 solution, I get the following message in the ULS:
TypeLoadException: Could not load file or assembly 'Microsoft.SharePoint.ApplicationPages, Version=220.127.116.11, Culture=neutral, PublicKeyToken=71e9bce111e9429c' or one of its dependencies. The system cannot find the file specified.
I do not experience any problems, but still I don't like messages like that in my log. So Im wondering why this message appears, an what causes it?