I have set up a keeper league, and marked all players as keepers. I have expanded the roster limits to allow for additional roster spots and increased the max allowed at each position.
The draft order correctly shows that there are 3 rounds and the order shows correctly. The available players to be drafted is correct. However when I enter the Mock Draft the draft ends as soon as I start it, and no players are selected.
I also actually tried starting the draft and it failed as well.