09-06-2012 11:02 AM
Hi and Welcome to the Community!
When you search this site for that error, you will find plenty of discussions about it...but sadly with few actual fixes yet. Hence, I suggest this thread:
It starts with a process for cleanly starting over, and there is some discussion, and there is also a post (15) with links to older Desktop Software versions, if those are needed. Note that this is not, by any means, guaranteed to work...but it has worked for many to resolve issues they are having.