Thank you for your report. We've fixed it and a new build has been uploaded. (1.3.7b).
Viewing post in Yes, Brother - [VISUAL UPDATE! v1.3.9b] comments
Now hit another one right at the end, after the end of game screen (I assume getting to the director's cut), I get "Loading Error - Failed to load: img/characters/!Door2.png". I keep hitting retry but it keeps taking me back. I had had some similar errors in the runup to the ending (during the final fight) but hitting retry seemed to push through that time