Cannot launch distiller to create PDF file

[Adam Schweitzer]

I am having a problem trying to save Frame documents as PDF files using
the File->save as command.  It seems to work haphazardly - sometimes, a
PDF is generated with no problem, other times Frame keeps trying for
quite a while (almost appearing as if the program crashed, using 100% of
the CPU), eventually giving up after several minutes with the error
message "Cannot launch Acrobat Distiller to create PDF file".  There
does not seem to be any discernible pattern to suggest to me why it
might be failing.
 
I am running Framemaker 7.2p158 and Distiller 8.0 on Windows XP
Professional.
 
It has been suggested to me that this might be a result of having
multiple copies of Distiller installed on the system, but I'm not sure
how I would check that (Distiller doesn't show up in Add/remove programs
on it's own).
 
 
Any ideas?
 
Thanks in advance,
Adam Schweitzer
Orenda Aerospace Corporation