Should you get the above message when running an update, you are being told that you cannot have access to the "gen" table. To remedy this situation, please check the following things:
Everyone is out of SAMS and they have Crystal/Report Designer closed (having reports open can "lock" the tables being used in the report).
Verify the "gen" table has not been saved as a "read-only" file. Please go to Q:\dapps\memb to verify this.