mbed microcontroller not active. Remove & re-install the USB cable to PC.
This message can occur in the following scenarios:
- The XCAM is plugged into the Tablet but the XCAM Battery is not supplying power.
- Ensure the XCAM is receiving power from the XCAM battery. The battery should be connected, activated (using the small silver circular button) and switched on (with the red on/off switch).