I just purchased the PSD repair for windows but the PSD was created on a Mac. Should that matter?

No, that would not matter. You could repair a corrupted PSD file irrespective of the Operating System you have created it and the Operating System you are trying to repair the corrupted file on.

You could use the Windows PSD Repair software to repair the file created on your Mac computer. If you do not have access to a Mac PC, you could use a Windows computer to repair the corrupted file.

Related FAQ's:

Safe and Secure
Safe and Secure