Originally Posted by till
Please have a look at your /tmp directory, there must be a database dump of your last mySQL database. Extract it and search for the sys_user table and records and insert them to your database.
OK! I'd find a database dump and I have uncovered that 3 tables in the db lack, It's possible to find one structure of the db of ispconfig complete in order to reconstruct it, to control it and not to have problems in future.
Many thanks for support and the precious councils!