Advantage Error Guide
Problem: The specified table contains corrupted data in the file or field headers.
Solution 1: Make sure the specified file is a valid table. Also, make sure you are not attempting to open a DBF table with an ADT table type, or vice versa.
Solution 2: If the table is an ADT (Advantage Proprietary Table), run the ADT table repair utility (ADTFIX.EXE) against the offending ADT table. This utility is available for download from the Advantage Developer Zone Web site in the "Tools & Utilities" section, http://DevZone.AdvantageDatabase.com. Once the table is fixed, all indexes on the table must then be rebuilt.