My UniversalGcodeSender suddenly doesn't work
I was working my project smoothly. However, when I ran the same .nc file again, the laser ran a wrong path and I tried to stop the machine by clicking the "Cancel" button in UniversalGcodeSender, and the machine continued running. I then switched of the power of the machine and closed the UniversalGcodeSender. I tried to rerun the same .nc file, this time the UniversalGcodeSender cannot find the port com3. I also tried reinstall Arduino IDE driver, JAVA, and downloaded the newer version UniversalGcodeSender v1.0.9. This time there was no response at all when I double clicked the UniversalGcodeSender exe jar file. What's wrong with my UniversalGcodeSender? Why were these happen? How can I fix these???