Wrong forum, you need http://forums.adobe.com/community/premiere?view=discussions
When you go there, you need to provide a LOT more information
-PPro Information FAQ http://forums.adobe.com/message/4200840
Please reset the Preferences of Premiere pro :
Windows 7: C:\Users\username\AppData\Roaming\Adobe\Premiere pro\ 7.0
MAC: Users/[user name]/Library/Application Support/Adobe/Premiere pro/7.0
rename the 7.0 folder or move it to some other location and launch Premiere pro.