It took me a week to get back to Parallels 3 after my disastrous attempt to use Parallels 4. I'm getting antsy to try Parallels 4 again. Is there any written procedures that would make it easier to recover a working version of Parallels and my VM should my problem not be fixed?
As a first step it is necessary to backup Virtual machine, either during conversion or before Parallels Desktop v 4 installation Uninstall any custom mouse and keyboard drivers from VM Check for viruses , If there are problems create ticket in support and also make sure you have the latest version 4 from http://parallels.com current build 3540