If you’re seeing Error 57 or 58, the temperature of the Smart Extruder+ has changed unexpectedly. If you’re seeing Error 57, the temperature has dropped. If you’re seeing Error 58, the temperature has risen.
There may be an issue with the connection between the extruder and the extruder carriage or with the internal heating components of the extruder.
if your MakerBot Replicator Mini+ recognize that an extruder is attached
Okay. Detach the Smart Extruder+ and inspect the rows of pins on the back. Push them in a few times to make sure they’re not bent or stuck.
Okay. It sounds like there’s something wrong with your Smart Extruder+. Please open a case with MakerBot Support. Make sure to include shipping information, log files, and the serial numbers for your extruder and MakerBot Replicator Mini+.