If the LED is flashing in red or an error message is displayed on the computer, check the following:

Is there enough roll remaining?
If not, replace the roll with a new one. For details, see the FAQ: "How to load the Media".

Is the roll installed correctly?

If not, install the roll correctly. For details, see the FAQ: "How to load the Media".

Is the Gap/Black Mark Sensor calibrated?

For details how to calibrate, see the step of using the BPM in the FAQ: "How to load the Media".