I had to uninstall AVAST 8 in order to install VMWare Workstation 8. With AVAST in my PC the VMWare WS8 installer could not finish the installation. It failed with an error 1920. Error 1920 indicates an inability of a service to start. In this case it was a newly installed VMWare service. Now I am afraid of re-installing AVAST with VMWare WS8 installed.