There is something wrong..... I installed the new version of failsafe and could not add a Database, because of ORA-00942 "View or Table does not exist". So i checked by enabling the database trace (in the DBMS_MONITOR Package) and looking for the SQL-Statement in the dump-directory of the database.
Failsafe is looking for a table "v$controlfiO" in another installation for "v$controlfif", thought v$controlfile was meant and created a public synonym for it ("create synonym v$controlfiO for v$controlfile;") after this it worked. I will log a Service Request for this issue...