That's weird. My PBP is installed in C:\PBP and MCSP in the (X86) folder just like yours. If I don't try to use MPASM as the assembler all I get when trying to compile is an error message saying that the file ...MSCP\run.pif can't be run because it's not compatible with the 64bit version of Windows. If I try to use MPASM, well then there's the other error as well. Frustrating.

Thanks!
/Henrik.