I have an Access 2000 database which also has links into Sage. The application works with no faults under the full version of Access but when it is packaged & deployed in runtime it periodically ceases in two places. The coding behind the two forms is fine, the code simply checks that certain fields have been completed using the isnull statement. The error does not give an error number or description it just states that "the application has ceased due to a runtime error" (helpful eh?) and I'm wondering if anyone else has had similar problems and if there is a way of pinning down the exact reason for it ceasing.