Just for information:
I upgraded my workstation from Ubuntu 11.10 to 12.04 I got the same error message again.
I restored from a backup made on our production server and everything worked again.
Production server:
Ubuntu 11.10, firebird2.5-super ver. LI-V2.5.1.26351
I believe the 11.10 version I had on my workstation matched the production server, so the fdb format should be the same, but I somehow needed the restore for it to work.
Just for information:
I upgraded my workstation from Ubuntu 11.10 to 12.04 I got the same error message again.
I restored from a backup made on our production server and everything worked again.
Production server:
Ubuntu 11.10, firebird2.5-super ver. LI-V2.5.1.26351
Workstation: 5-superclassic ver. LI-V2.5.1.26351
Ubuntu 12.04, firebird2.
I believe the 11.10 version I had on my workstation matched the production server, so the fdb format should be the same, but I somehow needed the restore for it to work.