Commands are sent but CNC won't move

[raulgotor]

Hi:

I'm on a Mac, Snow Leopard & Firefox, controlling a locally connected GRBL machine. After some time of inactivity, or even while streaming GCode, I've noticed that commands are sen't, but not executed. Trying to restart Grbl by software does nothing, and then I have to power cycle the Arduino and disconnect from SPJS and connect again to make it work again.

I've also noticed that after doing this operation, the failure comes sooner than before, even to the point that not being able to perform any operation before everything locks again.

I've no clue where the problem is. Problem is happens in Chrome too. Machine is stable if using UGS.

Thanks in advance,
Raúl