I've come to the conclusion that the infinite loading occurs either because of
a) RPG Maker's HTML export reads files differently, therefore somehow blocking the reading of some files
b) The game is too large to be run on browsers without specific optimization
For either problem, neither I nor Reim was able to find a solution. This is what happens when you put people who don't know how to code together to make a game. We've tried various preload plugins, checked through filenames, re-compile the game countless times but in the end, the same error persists.
I'm really sorry, but it's likely I will pull Errevale Fall off the site. It's disheartening for me to see the game unplayable despite most people seeming to like it. If you still want to play the game, the downloadable version will still be available in RMN or Game Jolt.
We're going to move on to our next game, a fun little platformer built with GB Studio. It's below 1.44 MB in size - if this doesn't run on HTML I'm going to commit a war crime.