SymptomsWhen you are trying to start Parallels Desktop application nothing happens, application is not responding or crashes.
This can be caused by incorrect, corrupted permissions to /usr/local/ directory in Mac OS X.
It can also be the result of an upgrade to Snow Leopard or activity of third-party applications.
1. Open Terminal (Application -> Utilities-> Terminal)
2. Copy/paste command bellow and press Return
ls -ld /usr/local/
3) You may see the output similar to the one bellow:
drwxrwxr-x 6 root wheel 204 Oct 9 20:30 /usr/local/
4) If you see other permissions, like: drwxr-xr-x (drwxr--r-x and etc), please use the following command to correct them:
sudo chmod -R 775 /usr/local/
Copy/paste it in Terminal and press Return.
You will be prompted to enter your administrator password.
You will not see it while typing.
After that please try to start Parallels Desktop again.