This "VRPC failure to run" if a wireless card was added to the machine did not seem to affect me, although I could no longer use the VRPC's networking facilities. If it did stop my machine working, then it took a few weeks to do so. What did affect my VRPC was McAfee virus checker which interrupted anything I was trying to do. My total machine crash happened when the machine was in stand-alone mode. On starting the machine, VRPC's boot stalled, being unable to find the hard disc image. On VA's advice I re-installed VA and then found I needed to unlock. That was on Sunday morning - it's now Friday and I have had to contact - by phone of email from MD.