I love the concept of this, i.e., auto emptying.  However in using the auto-empty for the 1st time, it is not working properly.  It emptied 1/2 of the dust cup and then stopped.  When I took the vacuum out to look, there was dust on the cup lid and sticking out of the opening to the dust bag.  I removed the dust excess and loosened the dust remaining in the cup and tried again.  It emptied a little more of the dust and lit up saying to replace bag.  I pulled out the bag, which was 1/4 - 1/3 full, and put the bag back in.  I tried emptying again and it would not remove any more dust and the 'replace bag' again lit up.  I'm not sure what else to try.  I really want this to work!  Does anyone have a suggestion?  Thank you!