I'd previously tried the older unstable release under Windows Vista 64bit and it sort of worked all be it with some distortion. Thought I'd try the newer version.
De-installed the older releases and driver, then after a reboot attempted to install the 1.2.3 install. During the install, think it was what ever gets installed after alchemy, I was unable to confirm it was ok to install the next step. My usb mouse and keyboard had stopped working. Had to power off the machine to recover.
I didnt have time to retry the install as I needed to get something else done, so plugged in a removable drive and a few seconds later (maybe 20) the mouse and keyboard died. Powering off the machine and repeating the process led to the same 'lock up'.
I gave up on the PC and went to bed muttering 'stupid bl**dy windows'. Will attempt tonight to remove the EigenD usb drivers and see if that stops the lock ups, just hope the keyboard and mouse remain operational long enough to carry this out.
Not sure if anyone else has seen this before but thought I'd give you the heads up. Assuming I can clean the machine up will try installing the unstable release again on Thursday once I have my internet radio show out the way. I'll post any further info on this thread.
cheers