I have a browsedialog on a maintenance window.  I added five field by which to search.  The form has been compiled, tested and successfully deployed.  Now, I want to add a new field to the list of searchable fields.  I click on the expansion button for the SearchFields property of the BrowseDialog and the "Search Fields" dialog window opens.  As soon as I click the 'Add' button the window closes.  I can remove items from the list, but I cannot add or edit them.  What can I do to fix this problem?

Thanks,
Bill