Oh no! This should never happen... ;)
But seriously, thank you for reporting the bug! Code 22 points to the tutorial system. I went through the source code, finding possible ways of creating a constellation, where this might lead to an error, but to no avail.
Do you remember anything that is related to the tutorial? Did you just click "continue" (or press enter) or did you abort it? Did it actually happen in the first round? Did you re-activate the tutorial at any point in the game?
Anything can help identifying the bug.