Recover UMDB database - Dbstudio 7.7.06.09 RedHat ES 5

Platform: dbstudio 7.7.06.09 on RedHat 5 ES 64bits IBM x3650 8GbRAM:

Since a power failure and abnormal shut down of the dbstudio server last week, everytime I run dbstudio, the system tries to recover the user managemente database. Apparently got corrupted. After dbstudio recovered, I have to setup the local user permissions so I can administer the synchronization folder. After that, I can connect ot message server, but I receive error messages when I try to update message server at the synchronization folder context menu.

How can I solve this issue without reinstalling dbstudio again or do I have to?

Best Regards