I add a tab and then add items by browsing to my DAL assembly. All the collections show up and I can add them to forms.

But when I close VS and come back - my custom tab is gone! Anyone know why?

Hmmmm...this happened to me twice, but I just closed VS and reopened it and now the tab I created it still there. Maybe something goofy about my installation of VS.

No, nothing goofy, vs.net is just weird.

Did you by any chance have 2 instances of vs.net open at that time?