basecamp 3.21 start up error

I have mapsource installed on my 64 bit vista. It is running fine. Wanted to try basecamp 3.21 and the installation was completed. However, it can't start up. The log says some manifest or policy file conflicts. Please help. There are a few. I only post one here.

Activation context generation failed for "C:\Program Files (x86)\Windows Live\Messenger\msnmsgr.exe".Error in manifest or policy file "" on line . A component version required by the application conflicts with another component version already active. Conflicting components are:. Component 1: C:\Windows\WinSxS\manifests\x86_microsoft.vc90.crt_1fc8b3b9a1e18e3b_9.0.30729.4148_none_5090ab56bcba71c2.manifest. Component 2: C:\Windows\WinSxS\manifests\x86_microsoft.vc90.crt_1fc8b3b9a1e18e3b_9.0.30729.1_none_e163563597edeada.manifest.