So you want to use the "New" button in dev mode eh? CRASH.



To keep this from happening you need to go grab this file:
{LINK REMOVED}http://www.mediafire.com/?jfb5mvqzazuzej4

You just need to extract this .zip so the 3 folders inside it sit in the your Super Meat Boy folder (or extract wherever and copy them here). Your Super Meat Boy folder can most likely be found here: Program Files > Steam > Steamapps > Common > Super Meat Boy.

Now you can change themes and level dimensions in dev mode like a pro!



Thanks to @gibbed on Twitter for providing this file to me.