Faults are not shown like it was before (type Checking, specified behavior)
Create a new project with two components. Create a connection. Change one port (e.g. the input port) to double and 0.0 as initial value —> the model does not show any faults. If you try to start the simulation, you only get the standard message: Run simulation failed to start.
The error log does not give you any information.
(from redmine: issue id 1200, created on 2013-01-24, closed on 2013-01-28)