QTR-Quadtone RIP

Hmm, spending some more time poking around the board it looks like CS5 is generally bad news and the Adobe Color Printer Utility prints blank pages for everyone else.  What a sorry state of affairs.

If CS5 is incorrectly treating all grey images as "generic gray gamma 2.2", would converting to that profile before printing result in a sane linearization target?  If yes, then would that get me reasonably close to an accurate print with just the linearization and not an ICC profile?  I imagine there's some sequence of painful profile conversions/assignments that would allow me to further refine the print using an ICC profile, but I'm too tired to figure out what that sequence would be right now.

Or is this all for naught and I should just try to scrounge up a CS3 install CD?

Thanks again, Ryan