Have downloaded Mac OS 10.11 El Capitan driver and now I can calibrate the board.
When I write words with the pen onto the board it appears as scribble. What do I need to do?
Has this issue only started occurring since you upgraded to El Capitan?
Does it occur with other programs also?
Does it happen with multiple pens?
Please let us know the model of your board as well as the driver and firmware version. (do not provide us the serial number in the forum)
Promethean Technical Support