Hi, I downloaded RC1 to give it a go. I failed to build pythoncore with VC8. The error is: Linking... Creating library .\./python25_d.lib and object .\./python25_d.exp config.obj : error LNK2001: unresolved external symbol _init_types ./python25_d.dll : fatal error LNK1120: 1 unresolved externals Thanks, Chris