Yes, that is the 1st thing I tried. Says 'up to date' with 6.0
Forums said try logging out and then back in. Tried that. Still says 'up to date'
This Photoshop knowledge base document gives a description of U44 errors.
One solution is to create a new user account on your computer with admin privileges and then try the update from the new account. If successful, the application updates across all user accounts; so you can switch back to your regular user account.
Looked at the link you posted and per the recommendation, uninstalled LR 6 and reinstalled it.
That worked! I am now updated to 6.1.
Thanks for your (quick!) help!