Primo doesn't work after GhostScript 8.51 install

[StephanPeters]

Installed GS 8.51 for use with GSView and Mayura Draw
Two days later noticed PrimoPDF gave me blank pages
Reinstalled PrimoPDF, did not fix.
During install, noticed Primo uses GhostScript
Uninstalled GSView, GS 8.51 and PrimoPDF
Installed PrimoPDF
Downloaded and installed GS 8.13 into \Program Files\ActivePDF\PrimoPDF\gs
Installed GSView
All works fine now, but found nothing about it in FAQ

Love PrimoPDF- a lifesaver!

I'd like the ability to embed fonts...

[StephanPeters]

Found PrimoPDF works with GS 8.51 just fine IF Ghostscript is installed into the PrimoPDF\gs directory during install...

\Program Files\ActivePDF\PrimoPDF\gs

Suggest a warning during PrimoPDF install if traces of another GS install are found hanging around in the registry