The SD card structure should now also contain a directory /filaments. If that folder is not present on the SD card when you try to add a filament, an error is thrown.

The information under To connect a 4-wire PT100 sensor is not completely conform the information on the wiki page on four-terminal sensing.

According to the wiki page, the voltage leads should be closer to the sensor (the PT100) than the current leads. However, in the image of the 4-wire connection above, the closest leads to the PT100 sensor (yellow and green) are connected to the current input of the daughterboard instead of the voltage input.

To be utterly exact, the connection to the board should be red-yellow-green-blue in this example.