The Lighting Controller

I have a new Macbook Pro Retina.
Now it is starting to turn the light on and off every 5 to 10 seconds!

Running from af windows pc, exported from Mac and imported in windows, everything is working perfect.

Any clue about what I am talking about?
Any clue about what to do?

Regards BG

May be this ?
viewtopic.php?f=10&t=2397

whats light are you talking about? if is in the fixtures, try to use a DMX terminator