Hi Douglas.

>I set up a TreeView starting from a table, only that if that table has TreeView more than 1000 registrations he/she gives the following mistake:OLE IDispatch exception code 0 from Nodes: Invalid Key...,

This is probably caused by a key value that the TreeView is interpreting as numeric, such as "1234". Try putting a single letter in front of the key (eg. "K" + what you are using now) to see if the problem goes away.

Doug