HELP Cakewalk pitch shifter

Just spent 4 hours recording a song, using Sonar 8 Producer, added plug in Pitch shifter from cakewalk, played everything ok, came back later, reloaded sonar to listen to the song & everything froze. the pitch shifter plug in box was outlined & flashing but black in the middle, could do absolutly nothing but go into end task, couldnt even shut the program down from Sonar! It was the f irst time I used Pitch shifter. Is there anything I can do to save the song? All my other songs that I recorded in Sonar work fine, just this one completely freezes everything up! Thanks if there is anyone who can help me with this