@Brian-David well this is certainly strange. This is the best theory I can think of:
Is one of the snapins specifically to blame? You state that this only happens when you run “All Snapins”; from the client perspective this is no different then running them individually. Are you running all of the snapins individually, and this issue is not present then?
If this is not the case let me know, and I can walk you through using the client’s debugger, it should help narrow down the issue pretty quickly.