Hi Stuart,

From what I can see, VFP9 is a lot more "picky" with data/index corruption. It might point to problems that VFP9 is finding that VFP8 isn't. If you are not already, make sure you delete the tag(s) and then redefine/rebuild them. This might help avoid any undetected index corruption.

HTH

>Hi
>I have an application that has to add a record to an old dos fox table. it works and has been working now for over a year without a problem, I tried to run it in VFP 9 and I get an error
>"Error building key for index" dayfile.cdx tag duplicate". There does not seem to be any thing wrong with the table itself and i can add records from the command window, and if i go back to using vfp 8 it works fine
>Any ideas?
>TIA
>Stuart