Openbuilds control stops mid job.. for no apparent reason.

I have recently moved from a "Crashing" and "Problematic" Windows PC to a MacBook Air for running the control software. The MacBook is dedicated to running Control, and does not need to do any other task.
I have the latest OS and the latest Control software.
On some random jobs it will simply stop at some point. the monitor show that gcode has stopped. if I click on the pause button and then click on continue > it will go one step forward, if I pause again and press continue it will go one more step forward, about 3 times then it will not respond. Also when I do this I don't see any gcode changes. I then have to reboot Control and reset 0 and start the job from the top.
I have tried to do some troubleshooting but I am coming up short.. When I first started using the MacBook everything worked perfectly. For some reason I now have problems, I can't remember what happened before the problem started ie, updates etc..
Has anyone here had similar problems??

 

Hi Peter, thanks for the reply.. I suspected there might be interference.. so I moved the USB cable away and use a ferrite on the cable.. it does happen mostly when the Router is closest to the controller.. would a shorter USB cable be better?

 

is there recommended distance for the laptop and blackbox to be from the CNC machine.. my laptop and blackbox are about 2 feet away from the Cnc...

 

I will check this out, and see if it helps too..

 

So far so good! New driver! New cable! New ballasts…