another odd error... I was able to print just fine twice tonight. Then went for the start of a 9hr print. Not even finished with layer 1 and all stopped with MAXTEMP error. I cleared the bed. tried again. same deal. same spot in the print. I shut off the bigbox. rebooted it and I STILL get the error immediately. hot ends are cold. three resets and still MAXTEMP on the LCD. any ideas?