Hey.
I ran the PD uninstaller and totally removed it.
I changed the Freeframe folder back to Freeframes and Vvvv worked.
Just to be extra sure and do a thorough test I downloaded both PD.exe and PD.zip.
Ran exe version and once again, no joy when loading Vvvv (didn’t rechange the Freeframes folder).
Once again uninstalled PD.exe and reused the PD.zip.
As you suggested both PD & V4 worked. So it does seem to be an issue with PD.exe and Freeframes.
This is very strange though as I’ve only had this problem on 1 laptop. My previous laptop and my current desktop are both pd exe installers with Vvvv 32bit and they work fine.