Today I got all sorts of “SideBySide” errors
“Generate Activation Context failed for C:\Program Files\ESET\ESET NOD32 Antivirus\MFC80U.DL” etc and
“The manifest file contains one or more syntax errors.”
This seems to be due to a Windows update that was pushed out back in July, this was for the VS2005 CRT and modified developers environments without telling them.
You can read more about it here:
http://blogs.msdn.com/vcblog/archive/2009/08/05/active-template-library-atl-security-updates.aspx
I had to manually apply this update to resolve it.
http://www.microsoft.com/downloads/details.aspx?familyid=766a6af7-ec73-40ff-b072-9112bab119c2&displaylang=en