HI JP
the laptops you are using (HP and Dell) are the same as our classroom. We need to use a hub on each of them in the classroom otherwise they will try to change comm ports and lock the program up.
This is not a chromapure problem. This same problem exists with CalMan too. In fact it was a Calman tech support person that told me to try the USB hub.
Gregg
Here is a link to the qd780 driver:
http://www.quantumdata.com/support/downloads/780/QD780.zip
