I can't open .p65 files in Indesign CS6. I get the following error message: Cannot open the file "file.p65". Adobe InDesign may not support the file format, a plug-in that supports the file format may be missing, or the file may be open in another application.
That's probably it, but it's also probably worth zipping it up and posting a link (or send it to Mike or me in a Private Message) and let us give it a shot. You can't win if you don't play, as it were, and maybe we'll get a miracle.