Installing Visual Studio 2012 (VS2012) on a working CA Gen workstation with VS2010 installed may cause build errors LNK1123 and NMAKE fatal error U1077. This occurs when building GUI clients.
LINK : fatal error LNK1123: failure during conversion to COFF: file invalid or corrupt
NMAKE : fatal error U1077: '"C:\Program Files\Microsoft Visual Studio 10.0\VC\BIN\link.EXE"' : return code '0x463'
This is a Microsoft problem. If you do not have the SP1 for Microsoft VS2010 installed, install it. If you do have VS2010 SP1 installed, install it again.