At 12.02 31/12/2001 +0100, you wrote:

>OK. But the original .gdb was deleted. I cannot make your suggestions.
>I have only the .gbk file and the error.

Create an empty database
with a trigger that checks for the field and set a default value
or better define in the empty database a default value for that column.
Then use gbak with the -R option...
if this doesn't work...
I have no idea...
it's normal that gbak checks for the integrity.
Regards
Marco