>I am getting an exception when I restore data (using IBExpert's
> interface to do this):
>
> IBE: Starting restore. Current time: 11:35:46 AM
> IBE: Unsuccessful execution caused by system error that does not
> preclude successful execution of subsequent statements.
> action cancelled by trigger (3) to preserve data integrity.
> Cannot deactivate primary index.
> IBE: Restore completed. Current time: 11:35:52 AM. Elapsed time: 00:00:06

My colleague (who use IBExpert) hit the same problem a week ago
(even with fresh new database created from sql script).
I use either gbak or fsql for doing backup/restore and I have no such problems
with the same database.

Ivan
http://www.volny.cz/iprenosil/interbase/