>Hi Dan
>
>Sorry, my English is not too good, it is not a cursor it is a table dbf...
>I want to add some fields to the table

Are you doing this programmatically using ALTER TABLE? Is the table part of a DBC? is it possible you've corrupted the DBC - if this may be the case, you might try

OPEN DATABASE your database name VALIDATE

to check the integrity of the DBC.