In one of my projects I am trying to set Data Source Settings on combo boxes.  On all of them I have tried it comes up and then the settings form disappears and I see the wait window saying it is looking for business objects.  This just stays up and I never get to the population data source settings.  I end up having to exit the project and can't get the settings to come up.  This is the only project I have seen it happen in, but it happens on all of the combo boxes.