After joining DuckTard server (ducktard.spdns.org:15124) I tried to access menu by pressing default "E" button, result however was not starting menu, but crashing game. I've managed to reproduce bug by joining back to server and trying opening menu, before doing so I also tried to move around. Bug happened on XNA Indev 0.54.1 version of game, when I tried at Monogame version, bug did not occur. Afterwards I tried once more on XNA version, and supprisingly my game didn't crash. There were no mods, custom gamemodes, content/music pack in use and music has been disabled all time.