>hi barbara,
>
>i only have two forms in my application. (login and main). all form's datasession is set to 1 - default.
>
>all my table are in the DE of these forms. has this anything to do with my problem?
>
>pls help.

Unless you've specifically set the AutoOpenTables to .F. for the Datasession (the default is .T.), then the DE will try to open the tables. Since you've already opened them in the load, you'll get the error that the file is already open. You should only open them in one place or the other.