Actually... if you deleted all the records in ost_user without names... you probably made things worse.
I would recommend that you restore the database.
You should populate the names in the name field. Then probably drop the ost_user__cdata
and ost_ticket__cdata
tables. Then go to the User tab and search for a user to re-generate the cdata table, search for a ticket to regenerate the ticket cdata table. Then see if the results are the same.