Voila, now everything seems fine. I did the rollback. Before the upgrade I have copied db40 directory and omnirc file. I did rollback by following order.
1. Uninstalled DataProtector newer version.
2. Copied db40 and omnirc that we backed up earlier.
3. Installed old version of DataProtector with upgrade current database option. It will use existing database.
4. Replaced lic.dat file. Copied old lic.dat file and removed new lic.dat file.
5. Started DataProtector services.
Checked devices and backups. Now it seems fine. It was backup since July, 2014 and very important files.
Thanks and sorry for my bad English.