QTR-Quadtone RIP

I have tried using a color managed workflow for printing to a 2400 with K7 inks in Adobe 
Lightroom with QTR Create-icc profiles (RGB version) without success.  Immediate crash after 
issuing either print or preview command.  This is with a Mac running OS 10.4.8.  No problem 
in either CS3 or Aperture 1.52, although the latter tends to give flat, muddy looking prints.  I 
think that Colorsync is interfering in the Aperture printing with QTR.  Lightroom has some 
serious problems with QTR.  Looks like I'll have to stay with CS3 for QTR printing.