if you bought a download, *OR* download an update later on, it doesn't have a "trial" mode. Like the one on the DVD you're getting, you NEED the SN to make it work.
Only difference between the trail & the "retail" copy.
This might be a dumb question but..
The demo version doesn't include certain things like the MC encoder, right?
So most of us who've installed the demo and then just entered the serial number might still be using the older version of the MC encoder. If so that just might explain the odd issue or two we're seeing.
Don't have a clue how to work out if this is so or not so I'll have to leave it upto someone else to fill in the gaps.