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So I failed to mention that I was seeing this halting when running the calibration from the printer menu itself. I just tried it from Matter Control again (as stated in the original post) and it completed successfully. I'm not sure if the gcode generated by the printer menu option is different from ...

Will do. Thanks!

Well maybe not so solved. Now what I'm seeing is that the calibration run will halt at random points in the process. Originally, it was obvious the 8pin plug was loose, but now that I've given it more slack, it appears to be fully seated but it still stops randomly. I noticed when I assembled the ...

SOLVED: Well, it was a stupid mistake. The 8 pin connector to the hotend came loose during the first run. As soon as I pushed it back in, everything was working again. I've pulled a little more slack through and it should be fine now. Thanks for your help!

When I first powered on the printer, before updating the firmware, the LCD menu was working normally - I could access all menu functions as usual. After flashing the new firmware, again the LCD was working normally - I could access al menu options. Also I have them labelled A and B and a quick check ...

So I've installed the HE280 hotend on my Max V2 following the upgrade instructions here: http://seemecnc.dozuki.com/Guide/Rostock+Max+v1-v2+HE280+Hotend+Upgrade/49 I've cleared the EEPROM and installed the latest firmware per the instructions here (Configuration.h set to motherboard = 301 and ...