BB Tour problems with sync

I purchased my Tour about 2 weeks ago.  I have had no problems with the device until 3 days ago. Everytime I try and sync it gives me this error:


Blackberry Manager has stopped working.  Windows will close program and notify you of a solution if one is found. 


The address book will sync but as soon as device calander prompts it closes immediately.


Please, please help! This is driving me crazy!