Hey guys. I installed the most recent security patch for Mavericks and today I have no icons on my desktop, programs won't launch and I'm getting error messages that programs can't be opened "because of a problem". All accounts are acting the same way. The only way to get the apple icon at the top left is to open Safari which is one of the few programs working. The security patch was the only think I did. Finder won't even open, it just says "Finder quit unexpectedly". I can't even upload a screenshot because when I click "browse" nothing happens. Any suggestions? Thanks in advance!