Thank you all. Your suggestion worked. :)

>>Hi,
>>
>>I recently made some major changes to a project I was working on - including removing some tables and adding some new ones. I went to into the database designer to remove some of the old tables and edit the referential integrety. I got a message saying that I need to run "Clean up Database" from the Database menu. Only problem is, its greyed out. Any ideas?
>>
>>Thanks,
>>Chris
>
>Close the database, then:
>
>

>OPEN DATABASE myDatabase EXCLUSIVE
>

>
>Since you're basically packing a table, you need to have exclusive use of the database.
>
> Jay