I'm working on an application that sends MIDI data out to a light array.  I'd like the application to have several different modes, i.e. on, off, oscillating, random, etc.  I'm using the controlP5 library for my GUI, so I need to be running the MIDI processing in a different thread so that the main window can continue drawing, etc.  I followed the Processing Threading wiki example to place the MIDI stuff in a seperate thead, which I can start and stop; however, when I try to start it again I fail with the message:

"

SEVERE: An error occured while forwarding a Controller value

 to a method in your program. Please check your code for any 

possible errors that might occur in this method .

 e.g. check for casting errors, possible nullpointers, array overflows ... .

method: programs

exception:  java.lang.reflect.InvocationTargetException

"

My code is located at  https://gist.github.com/fde8f4db7a3dcc558820

Any help would be much appreciated!

Drew