prl_disp_service not running

Hi all,

When I try to start parallels 4.0 on my mac I get this message...

Unable to connect to Parallels Service.

Make sure that prl_disp_service is running or check your firewall settings. If the problem persists, contact the Parallels support team for assistance.

I've downloaded and run the Onyx software and followed the instructions for the other fix to be found on this site....

I've uninstalled and reinstalled parallels and it's still not working....

Does anyone have any other suggestions?

Thanks!

Russ