Ok, sorry to keep filling up the forums with my problems but I don't know where else to ask.
So, after I've updated to the 4.1.2.0 firmware (MPC 6515 controller) and LaserCut 5.3 I had that weird problem with the laser not firing up. Following your advice I've reinstalled the LaserCut 5.1 software and the 4.1.0.18 firmware.
Now, I have a different problem. The laser just burns a small part of the graphic and it stops moving and firing but the timer on the pad continues to run as if nothing happened.
Please help me.
Controller type MPC6515
DLL Version 4.1.2.0
Firmware version 4.1.0.18
Hardware Version 3.0.0.6
USB firmware 1.0.0.11