The problem occurs because the betza.js script did not keep move lists per Diagram. So when I posted a Diagram with a move list, it gets confused, and tries to perform the moves in Mirko Mirko's Diagram on the same page. (Which of course leads to an illegal move rather quickly.) I patched it now such that it remembers which Diagram contained the move list, and only loads the game into that one. But you have to flush the old version out of the cache first.
Refresh your browser cache.
The problem occurs because the betza.js script did not keep move lists per Diagram. So when I posted a Diagram with a move list, it gets confused, and tries to perform the moves in Mirko Mirko's Diagram on the same page. (Which of course leads to an illegal move rather quickly.) I patched it now such that it remembers which Diagram contained the move list, and only loads the game into that one. But you have to flush the old version out of the cache first.