i have found the problem ...

i try to change the isc4.gdb to log the loggin atempts
and it seems to have some problems.

How is isc4.gdb created? I thought that installing the server
would create from scratch the file i can execute procedure on
any database create by me except on isc4.gdb. I created my isc4.gdb
and it seems to work perfectly i can see the log file and all login
atempts are there. But when creating my isc4 i cannot create

CREATE DOMAIN COMMENT BLOB( 80, 1 )
CHARACTER SET UNICODE_FSS

it fails and i don't understand how was it created in original
isc4.gdb?

Thanks all