Oh... Did you get this error in the current version of the public build or it's one of the older ones? I'm interested in the version of the game that you can check in the save/load menu.
It's a game crash, so it's a rather big problem for the player. Anyway, I just tested out the scene in the first exploration zone, and it runs correctly for me. Looks like we need to see your saves to troubleshoot this properly. Zip your entire save folder and send it tome via yeehawgames@gmail.com
Also, did you use any cheats or save editing tools before the problem?