Ah, ok so you are working with the 'SYST3M ultraDMXpro' actor.
My guess is that some init setting is stopping it from running (did you browse the internals? if so did you save update the actor when you left? some minor change might have been saved into it.)
.. really hard for me to say, I haven't looked at it for sometime since I have it running very well for a few projects
.. I know I have tuned it a bit in a recent project, and should probably do an update to my site.
My suggestions would be to add the original one (as it was downloaded) to your global actors folder.. this way you have access to a clean starting point that has proven to work for you.
In anycase I am glad its working for you. Do let me know if you have any other issues with it.