Since installing OS 4 on my TI Polar and Win7 x64 machine, I can no longer put my computer to sleep and have the Virus TI MIDI driver come back to life after waking from sleep.
After waking from sleep and loading my Cubase 5 project the Virus TI control reports that the Virus TI MIDI driver is not responding and to reboot or reload the driver. This was never an issue with OS 3.x.
I have to completely reboot my system in order to remedy the problem with the MIDI driver.