Beaglebone Black Wireless I2C Error

I am trying to get librobotcontrol working on my Beaglebone Black Wireless, but I keep running into an error that I can’t seem to find any information about.

I have flashed the board with the latest image, updated the software as per the Beaglebone upgrade tutorial, and followed the steps from the librobotcontrol installation manual.

When I check functionality by running rc_test_drivers, everything passes. However, when I run some of the example programs (e.g. rc_altitude, rc_balance, rc_test_mpu, etc.), I receive the following error:

ERROR: in rc_i2c_write_byte, system write returned -1, expected 2

The board is running on a dedicated 5V power supply and there is nothing else connected to it.

I suspect I am missing something very basic, but I’m new to the Beaglebone and have not been able to find any information about this error online. I’ve attached a screenshot of the rc_test_driver output, the error I’m seeing, and my version information. I’d be grateful for any guidance you may be able to give. Thanks.