Hi,

You can try to use gbak to backup & restore the DB.

If it does not work, try to reinstall Firebird 1.0, make a
transportable backup (gbak -b -t), then reinstall Firebird 1.5 and
restore.

HTH,
Fabrice Aeschbacher

--- In ib-support@yahoogroups.com, "jwdongcn" <jwdongcn@y...> wrote:
> Hello!
> I upgrade to Firebird1.5 RC2 today.
> I can connect to the old gdb file which is created under FB1.02
> using "EMS Interbase & Firebird Manager 3".
> But when I use select command, it return a error:
>
> Dynamic SQL Error
> -SQL error code = -204
> -Table unknow
> -T_USER //It's one of my tables.
>
> But my application can run and retrieve information from the same
> database.
>
> Why? and how to resolve it?