Update: Dev version should load from zip file in future:

Message to team members: Found bug that broke the doors in the dev version. Working on fixing it now. Eventually this will be fixed. Though booting up the dev version of the game takes way too long. For now, something you'll have to deal with. But on my list is to make the game load levels from zip files to make the loading go faster. The reason the game loads so slow currently is because the game has to "guess and check" to see if the files exist. Because flash is NOT allowed to see all the files in a directory. However, flash can see all the files in zip file.