Cubase hangs on exit if midex 8 is connected

Using windows 7 64 bit… if the midex 8 is connected cubase will hang on every exit. I then have to force a shutdown of cubase. this results in all midi devices being lost so I have to re-install EVERY device. if I uninstall the midex 8 W7 drivers cubase does NOT hang on exit and works find (but no midi!!!)

also program changes do not work all the time, notes hang forcing me to turn of my outboard device, volume slider stops responding. If I stop transport and then restart all volumes are reset…

I have un-installed and re-installed drivers many times with no luck…

does anyone have any clues??

thanks!