i have never seen that error before.
Does your box have an SD card.If you run into issues I would format that to.
If everything is working I wouldn't worry about it.
I've got an SD in, but I don't know if it recognised it.
One more thing, I've re-flashed as you suggested (Clean ( Just flash and start clean ) but somehow it has remembered my "Favourite" EPG, do you know how I can get rid of that?