Thank you for the precious tips ! You made me able to boot Parallels 7 under Mountain Lion, this worked for me: 1) I used this command in the terminal to start in 32 bits @sudo systemsetup -setkernelbootarchitecture i386@ ( to default start in 64 bits again… @sudo systemsetup -setkernelbootarchitecture x86_64@ ) 2) The file “Parallels Service” has again to be put into the folder /library/parallels (Image 1) this because Mountain Lion places it into a new root folder “Incompatible Software” when booting in 64 bits 3) I’m now booting Parallels 7 with the Program “FileServe Parallels Desktop Launcher.zip” mentioned here by 87racer “http://bs87.com/post/17757954386/par…tain-lion-10-8”:http://bs87.com/post/17757954386/parallels-desktop-7-on-mountain-lion-10-8

I’m also hoping for a quick fix by the Parallels team, thanks in advance Have a nice w-e everyone