> I was able to delete old gds32.dll, I'm looking now for the original file -
> not available with firebird-installer 2.5.

fbclient.dll and gds32.dll should have compatible interface.

If an old application requires "gds32.dll" it is ok to rename
fbclient.dll to gds32.dll.

Only if application really does not run with renamed fbclient.dll you
can try to extract that file from old installer.

Elmar