A tread has broken

hey everyone,

i have been printing with mij k2800 for while now and it had been working very well.
a short time ago my priter suddenly stopped.

  • heater was on
  • motors were off
  • bed was on
  • communication was blocked
    the log sad: a tread has broken
    i could only reconnect when i restarted: repetier host
    my pla flow was fine when i tuned the gear on the extruder by hand.

i do not understand what is going on.
is there anybody encountering the same problems
or somebody who knows what the error message means

sorry for my bad english
i hope you can help me

Just turn the power off and on again, remove the usb cable for a few seconds and restart repetier. Then try again.

thanks for youre help. but that doesnt do it that way i cant print anything becouse the error message will pop up again en abort the printing task while printing.