Something crazy has happended to my server after I confused it with various
versions of Interbase/Firebird.

When running IB5.6 and trying to recompile a procedure I get

'unsupported BLR version (expected 4, encountered 5)'

I'm pretty sure the gdb files where restored on another machine running
IB5.6 and copied to the server.

I assume BLR version 4 is IB5.6. If so which Firebird version does BLR
version 5 belong to?

Regards
Paul