William, I spotted this yesterday at the MacFixit site. http://www.macfixit.com/index.shtml?MFI_Session=b04e8128c20b6b6cafb840ea73086802 I have cut and pasted it into this email message. Good luck, Bill Montreal Tutorial: What to do when a Mac OS X application will not launch Delete appropriate .plist files A non-launching application can be the result of a corrupt or otherwise defunct associated .plist file (for more information on exactly what a .plist file is, see this series of articles) Most of the preferences files that we will be talking about are stored in a folder named Preferences, and located in the Library folder of your home directory, e.g.: ~/Library/Preferences/com.apple.Safari.plist. Go to the ~/Library/Preferences folder, and search for any .plist files that may be associated with the application you are having trouble with. Drag the .plist file(s) [many applications have more than one associated .plist file, so be careful to scour for all of them] to the Desktop, then re-attempt launching the application. You can also use an application like Preferential Treatment to check for corrupt .plist files. Re-install the application Try re-installing your application from its original media or download source.