I picked up a used STF8300M and was able to connect to it in MaximDL by selecting STF8300 in the Connect To menu. I then re-connected an ST8300C, and now I am unable to connect the STF. All drivers are updated and there is an entry in the Device Manager: SBIG USB-64 Pro Camera With Firmware. The Connect To dropdown in the camera dialog now has USB but no longer shows STF8300. I get error 27, can't initialize camera, when trying to connect. If I move the USB cable to a different connector I get an error that the Device driver was not successfully installed. Camera not recognized in CCDOpps either. What is going on?? Amazingly, I can still connect to the 8300C.