Corrupted index could cause this error. Reindexing should fix the problem.

>Hi,
>
>One of our clients is receiving an error I have never seen before. Here is the information that comes up in the dialog box:
>
>Fatal Error: Exception Code=C00000FD
>Called from - rundayend line 0 {innt\system32\vfp6rdll}
>Called from - day-end line 0 {innt\system32\vfp6rdll}
>Called from - rundayend line 0 {innt\system32\vfp6rdll}
>Called from - ON... line 0 {innt\system32\vfp6rdll}
>Called from - sw_start line 0 {innt\system32\vfp6rdll}
>
>Has anyone seen this error before? If so, what does it mean?
>
>This is a VFP 6 app (SP5).
>
>Thanks, Al