Digital BW, The Print

For those of you who have installed QTR on Linux, does this problem
sound familiar:

I have compiled and installed the software, defined a QTR version of 
my 2200 as a printer, and installed the example curves. Running a print
job via "qtcups CurveDesign/Images/qtrip-big.jpg" 
produces a print dialog with all the right stuff, ie shows the curves 
and options as expected. When I click OK the print manager shows a 
document getting queued for the printer. So far, so good.

Then the job disappears off the printer queue but nothing happens with 
the printer. (As a sanity check, if I invoke qtcups as above but print 
though the standard, non-QTR, printer definition the image prints 
immediately without problems.)

When I look at the the results of Print-Gimp-ErrorLog.command, I see two 
suspicious things. On jobs where I select paper source = standard, I see 
warnings that say "Media Tray Empty!" and "Invalid Printer settings!". 
If I select paper source as "Auto", I see those messages plus 
"PID 1234 crashed on signal 11!"

Thanks for your patience. Resolution will get rolled into the Linux 
installation notes, of course. 

Thanks,
David