I've got similar result, Trying I2c between an omega and an arduino do not work with i2cget.
I2cdetect do not work at all.
I2cset seems to work.
As far as iknow, i2c is working with python or other language.
I2cget works with bitbanged I2c, i have followed this tutorials :
I agree with you, there is many problem with this product, no answers, it seems to be too young !