Incomplete Upgrade from SugarCE 6.5

I think the database upgrades are all in.

However, I am getting this error in the log file:

[FATAL] modified_user_link for alerts_modified_user failed to load

Thu Mar 30 10:43:11 2017 [2244][1][FATAL] created_by_link for alerts_created_by failed to load

And the home page and list views are not loading. Detail view are loading where I can find the records.
The admin page is blank and Repair and Rebuild is stopping at ‘Rebuilding Relationships’.

How can I fix this?