First, try a permissions repair from Disk Utility. Then, if that does not work, try and reinstall it.
oh man. wth is a permissions repair?
A simple Google search can find the answer: http://www.google.com/search?hl=en&...=1&ved=0CAgQBSgA&q=permissions+repair&spell=1
it doesnt show up as an app. how can that be?
Applications folder -> Utilities -> Disk Utility -> Repair taboh man. wth is a permissions repair?