Do you see this in your Store Manager:
Empty Admin Activity Log table from the database
WARNING: Be sure to backup your database before running this update!
The Admin Activity Log is a tracking method that records activity in the Admin. Due to its nature it can become very large, very fast and does need to be cleaned out from time to time.
Warnings are given at 50,000 records or 60 days, which ever happens first.

Hit the Reset button to clean the admin_activity_log for you ...