Hi,

>>Make sure users have enough security privileges to write and modify files in the root directory.
Ok, I will check it out. But, it works before this.

>>If you still have a problem maybe the .FPT is corrupted; you could try creating a new one with an identical structure and copy the records to see if the problem persists.

I used to SELECT all records into cursor, ZAP the table and APPEND FROM cursor again. But it still cause error after couple transaction.