VisualSim.kernel.util.IllegalActionException: .Database_Null_Pointer_Exception.Local_Database -->
java.lang.NullPointerException
in .Database_Null_Pointer_Exception.DigitalSimulator
at VisualSim.simulators.de.kernel.DEDirector.fireVisualSim(Unknown Source)
at VisualSim.simulators.de.kernel.DEDirector.fire(Unknown Source)
at VisualSim.actor.CompositeActor.fire(Unknown Source)
at VisualSim.actor.Manager.iterate(Unknown Source)
at VisualSim.actor.Manager.execute(Unknown Source)
at VisualSim.actor.Manager.run(Unknown Source)
at java.lang.Thread.run(Thread.java:745)
at VisualSim.kernel.util.VisualSimThread.run(Unknown Source)
Solution: Make sure to have the block parameters are correct. and the corresponding the blocks exist/