I'm currently looking for the Green teleportation stone that crashes the game. When I find it I'll fix the issue and update the game. I'll edit this post if you need to restart your save. It'll only happen if I need to make changes to the database, let's hope that won't happen!

EDIT: I've found the bug and fixed it. To take your save from the older 0.4 version, just copy the save folder from /www/ and paste it to the new build's www folder.

Edit: Ugh the same !Npc_tall thing... I really need a day off. I'll reupload the fix for it.