Try creating a new user account with admin privileges and run the update from that new account. If successful, LR will be updated for all users and you can switch back to your regular user account. If you don’t like the idea of creating a new admin account, you need to uninstall and re-install.
Uninstall using your computer OS e.g. Windows Control Panel or Finder >> Applications on Mac OSX.
Re-boot your computer
Go to the link below and install LR6.0
Then download the LR6.5.1 update
Creating a new user account didn't help at all..Just got the same error message. Now I will try to deleted start again
I just spent Hours on the phone with a person who took over my computer. She got the same error codes i did, But finally got me updated. This is really too much to have to go through
Sorry to hear it took so long. A few users appear to get these update error codes but for the majority updates usually happen quite smoothly. Glad to hear you are up to date again.