There is a firmware upgrade for your burner. Don't know if it'll help but it's a good starting point. Get it here .
Click on Firmware updates , middle right & follow the instructions.
The other thing to do is check that DMA is enabled for your burner. Check this link .
I'm out for a while now, I'm sure Rapid_Fire can help further once you've done these things, should this not have solved the problem.