After I installed my 1640 I went to upgrade the firmware from BSHB to BSKB and the firmware updater crashed after giving the warning message. So I found the .cvt file and upgraded with WinDWFlash.
Then I install Qsuite 2.0 and try to launch it. Crashes right after warning message. Rebooted to safe mode and tried again. Same problem.
After some more playing I figured it out. There is a bug in the benq software when detecting the drives in the system. From my sig you see that I have the 1640 and the 1625. Well, if I go into device manager and temporarily disable either the 1625 or 1640, then qsuite boots up.
Just thought I would let everyone know in case someone came across this same problem. If you have the same problem, please let us know what benq drives you have as well.