I had two live accounts, one was syncing just fine to skydrive but I didn't like the username so I deleted the account.  Now, I can't login with the desktop interface on my other (still existing) account.  However, I can login to the account online.  The desktop client for skydrive just says "There was a problem signing you in" when I try.     My user ID  for the account I want to keep and sync is *** Email address is removed for privacy ***. 

P.S. I tried uninstalling and reinstalling the skydrive client.  That did not work.