error in running picodlp-control on beagleboard/angstrom


I installed the angstrom distribution by SD card partitioning and
logged in as root.I have a pico projector connected to beagle board
using HDMI
connection. The pico projector displays a GUI showing boxes for new
user, username etc.

If I run picodlp command, I get the following error

root@beagleboard:~# picodlp-control vflip 1
ERROR: I2cTransfer: ioctl failed: Remote I/O error (121)
ERROR: I2cWriteBytes failed: -1

How can I resolve it?