At 05:34 PM 24/10/2007, you wrote:

>L.S.
>
>Any suggestions on the belowmentioned matter?
>Te latest version 1.5 server on the same WinXP workstation works
>without a problem.
>
>I'd hate to degrade/get stuck to 1.5

Do you understand that declaring external functions in one database does NOT make them available to other DBs on the same server - you have to declare your functions in all databases.

Try running this query in isql (not ibexpert):

select
RDB$FUNCTION_NAME,
RDB$FUNCTION_TYPE,
RDB$MODULE_NAME,
RDB$ENTRYPOINT
from RDB$FUNCTIONS

That should give you some lead as to what is confounding the engine...

./heLen