Nope. That's not it. You should be logging errors from a VFP Try/Catch, On Error, or Error()

>Haven't checked that. Good point. I should check that next time I access the customer computer again.
>
>Where is the default location for that .log file? is the file: vfp_error.log?
>
>There a .log file in c:\Program Files\Common Files\.... vfp8rerr.log
>But on my laptop this file hasn't been updated since 2008.
>
>Thanks
>Cyrus