When an exception is thrown at a unit, it shows red in the graph (great!)
When an exception is thrown at a unit in a graph within a super unit, the super unit colour will remain blue even though a unit within that is red (if you double click to view the graph).
I would have thought propogating that error colour status up to the super unit would be a good idea so when you're looking at a graph, you know which super unit to inspect. If you have 10 super units for example, you have to inspect each one until you find the unit with error.
Customer support service by UserEcho