Importing Audio crashes Sonar 8?

hey noob here.  i cant seem to import audio into any tracks. i have in the past with no problem so im pretty sure im doing it right. every time i select file>import>audio when it takes me to my documents etc it crashes. and by crashes i mean it completely locks up untill i get the dumb "(not responding)" from windows and talks about error reporting. anyone know whats up? it worked fine TODAY, and nothings changed comp wise.