Platform win32 cannot be loaded because of incompatible environment

Receiving this error when trying to run dataloader within the command line interface on windows. 

[Libraries for platform win32 cannot be loaded because of incompatible environment]

I have ensured that I have both 32bit and 64bit version of python and java. Is there a way within the command line (or python) to call specific version, or is there a 64bit version of the .jar files?