i cannont access preferences in my facetime application. facetime is refusing to turn on
hi. i am experiencing problems with my facetime on my macbook pro. i can use it on my iphone but cant use it any more on the laptop. facetime wont turn on, wont let me access preferences and i dont know how to fix it. my laptop was bought in 2010 so i dont have any applecare support available. please help!
MacBook Pro (13-inch Mid 2010), OS X Mountain Lion (10.8.3)