New reserved words were added to the PowerScript language in PowerBuilder 8 to support exception handling. If you use any of the new reserved words ( TRY, CATCH, FINALLY , THROW, and THROWS ) as identifiers in existing applications, you must change these identifiers, giving them nonconflicting names. You can run the Migration Assistant, available on the Tool tab page in the New dialog box, to locate incorrect use of the new reserved words.