VFP uses a user specified hard drive location for temporary files including ones used in indexing. Even though you have lots of RAM that hard drive location is probably too small relative to the index you are creating. You can change the location in Tools - Options - File Locations - Temporary Files and specify a location with more hard drive space.
Good Luck.

>Hi,
>
>Could someone please kindly advise me on how to solve the problem of my application running Win95, vfp 5 written application which after maybe 1 week will give me error of insufficient memory.
>My application just reindex the index files every night. Other had advise me to increase RAM memory and win95 swap file. My PC is already using 32M of RAM.
>
>Did I miss out anything that cause the problem. Thank you.