Software Update Isn't Working! :(

Hey everyone,

I just installed Celestia (a program used to go through a 3D-like environment of space on your Mac) and then uninstalled it because it froze every time I opened the App. Now, after the uninstallation, my software updater simply won't update! When I check for updates manually (and automatically I'm guessing), it gives me this error message, "The application System Preferences quit unexpectedly. Mac OS X and other applications are not affected. Click reopen to open the applications again. Click Report to see more details or send a report to Apple. Then it gives me a lengthy report (which I can't post on here and probably wouldn't make a difference anyway).

I don't know what is wrong with it, please someone, if you can, help me! I really hope this doesn't affect the rest of my OS X. Thank you.

Bob Sullivan

 

Thanks, I'll try that.

EDIT: How do I find PLIST? I tried spotlight but comes up with other files. :S Lol, sorry but I'm a new Mac user.