Hi, At my office we have a mix of XP (32bit) and Window 7 (64 bit). I installed python 64 bit on the windows 7 machines and 32 bit on the XP machines. The question is can the different version run the same code without causing issues. Can the 64 bit use the same byte code as the 32 bit? It seems to be working but I thought best to check. Johnf