I had the "Enter once, live dangerously" set for the ballot entry method and the enter parli ballot once in prelims option checked. I didn't get an error message, it just turned the judge's name from blue to yellow and left it in the entry tab. When I went into the Force Edit Results, the done box was unchecked.
I left them unchecked to see if the went away after I put in the Parli's ballot at the end of the night. No dice. I had to go and check the box for each kid.
Even with this small issue, it worked wonderfully and was a vast improvement over the google spreadsheet I've been using.