I have Parallels 8 installed on my MacBook Pro using OSX 10.8.4. I have both windows 7 and 8 virtual machines. They have been working flawlessly for a long time. Just recently, I can no longer launch a windows application without it crashing immediately in either windows OS machine. The only workaround that avoids a app crash is to launch windows 7 in safe mode. Any trouble shooting suggestions?? Please help Thanks Tony