>Hi,
>
>>>What is happening in the program when the failure occurs? Best if you can tell the instructions executing at failure.
>The program is trying to add new records to VFP underlying table.
>
>>>What version/SP-level of Visual FoxPro?
>VFP6 SP5
>
>>>What OS/SP-level on workstation?
>>>What OS/Sp-level on file server?
>WINXP Home/Pro (both are same)
>
>The error returned by VFP is "There is not enough disk space for "c:\mytable.fpt""

http://msdn.microsoft.com/library/default.asp?url=/library/en-us/dv_foxhelp/html/err56.asp

Make sure antivirus is turned off. Make sure users have enough security privileges to write and modify files in the root directory.

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.