Need Help: Bootcamp/Partitions Issue

I finally finished installing windows 7 via bootcamp, but I decided it was slowing down my computer a bit too much, so I deleted the partition. I was checking through all of my programs, and it turned out something went wrong with my skype. It's able to open fairly fine, but when it opens, it shows half of the application, and I'm unable to call anyone, leto do anything. I was wondering if anybody could help me fix this. I've tried reinstalling, and restarting my computer, and still nothing has changed.

Click the Green Button.