>I got this error "Not enough memory for file map" when I tried to add a field to table structure. I got like 4 giga of memory. And I think the 3 memo fields in the table has something to do with the error. the FPT file seems somewhat having some corrupted data.
>There are like 50 different tables in the Database. Only one table is giving me the error.
>
>I can't add field to or delete field from the the table. I tried PACK , it ran without problem. But I am still getting the error when trying to
>add a field to the table. The table has 51 fields, record length: 484
>Is there any way to clean up the fpt file ?

One thing you could try:

1. Backup all your database and table files (including CDX, FPT etc.)

2. Copy all the data from the suspect table to a temporary one in the same database: COPY TO TempTable DATABASE MyDatabase ALL WITH PRODUCTION

3. See if you can successfully modify the structure of TempTable. If you can:

- Check that TempTable seems to have all the data
- Make sure you have a good backup!
- ZAP your original table
- USE the original table, and APPEND FROM TempTable
- Test to see if the issue with the original table is fixed
- If so, remove the TempTable from your database