Firebird 4 / 5 Compatibility

[gorepj]

I have a major issue with a legacy Firebird 3 database that I imported into Firebird 5.
I can register the database with Flamerobin.
The following exception occurs when I try to open this database in Flamerobin

Engine Code : 335544343
Engine Message :
invalid request BLR at offset 52
function BIN_AND is not defined
module name or entry point could not be found

This has something to do with the UDFs used within the original firebird 3 database.
SOLUTION
I am a developer using Delphi and I too get the same error from my application when opening this database imported that I imported from Firebird 5. The exception happens when using GetTableNames( method in the Firedac connection object. I have overcome this problem in my developed application by replacing the GetTableNames call with a simple query instead.

"select rdb$relation_name, rdb$description
from rdb$relations
where rdb$view_blr is null
and (rdb$system_flag is null or rdb$system_flag = 0)
order by 1;"

Please investigate and correct/
regards
Peter