Ahhh ... thank you very much. I knew it was something small and "not too straightforward" that was keeping me from 
installing this.

Yes, I have both Sun java 1.5 (sun-java5) and 1.6 (sun-java6) installed on my system. Before I try reinstalling I'll 
double check to ensure that the root user has all the appropriate classpath junk.

Again, thanks for the help, it is much appreciated.

hmm ... here comes the next odd part ... I didn't find any vpd.properties under my /root directory (root's home), so I 
did a "find / *|grep vpd" and it only came up with two unrelated man pages, /usr/bin/vpddecode and /usr/share/man/man8/
vpddecode.8.gz
so I removed a bunch of hidden folders (that I knew were unneccesary) and still no avail.

so if vpd.properties is not present anywhere on the system, and I've removed /opt/qnx632 as well as /etc/qnx , what else
 could be preventing the installer from runing correctly?

Additionally, the momentics-6.3.2-xxxxxxxxxxxx-linux.bin will not run, even though it is a *.bin and it does have a+x in
 its permissions, so I was using java -jar qnx_linux_setup.jar to run the setup. I hope this sheds some light on the 
issue. Again, thanks Andy for your help, and thanks in advance for more help.

Andy: Yeah, those environment vars were still set, so I guess that's why it kept failing: thanks :)

Natalia: Thank you for that tidbit ... I didn't know that was there, and I don't know why I didn't check out the 
Utilities directory ... that would have made sense.

Who would one have to talk to to get the QNX<OS>Cleanup script mentioned in the installation/removal section of the 
momentics documentation?