Try following:

1. Delete your Foxuser.dbf
2. Delete FoxTask.dbf in the same directory as foxuser.dbf
3. Run VfpClean.app

hth

>Hi:
>
>I was playing around with the coloumns and looking at the optionsin the task list when sudenly I got an error messagE:
>
>Program Error
>Cancel
>Suspend
>Ignore
>Help
>DUEDATE is not unique and must be qualified.
>
>
>Now, even if I exit VFP and come back in I'm getting the following error when trying to access the task list:
>
>Program Error
>Cancel
>Suspend
>Ignore
>Help
>Illegal redefinition of variable _OTASKLIST.
>
>Intermittently, I also get the first message.
>
>Thanx,
>
>Yossi Gourarie