It looks as though you don't have write access to where the driver is trying to write these temp files. This could be TMP or TEMP on Windows, or somewhere else depending how foxpro works (I've no idea, I've never used it). I'd check the eventlog to see if there is anything related to this, or see if one of the sysinternals tools may be able to help you find out what's going on. Perhaps reading some of the google search results will provide an answer.