Game-breaking missing files:
img/animations/Light3.png
img/animations/StateUp1.png
img/animations/Stick.png
Huh. I played all the way through after compressing and never encountered that, but thanks for the heads up, I'll look into it. (I know I'm way late, I've been terrible about checking my e-mail out here on mobile data.)
Edit: Sure enough, there are several animations missing - it looks like the "exclude unused files" feature in MV's deployment menu goes significantly overboard and ends up excluding files that were, in fact, assigned to usable/learn-able skills. That's a valuable lesson learned. I added all the default RTP animations back to the folder and will upload it when my 3G wants to cooperate.
Failed to load:
audio/se/Darkness1.ogg
audio/se/Darkness3.ogg
audio/se/Magic4.ogg
audio/se/Paralyze1.ogg
audio/se/Sword5.ogg
audio/se/Teleport.ogg
audio/se/Thunder1.ogg
audio/se/Thunder5.ogg
audio/se/Thunder6.ogg
audio/se/Thunder8.ogg
audio/se/Wind3.ogg
audio/se/Wind5.ogg
(These at least doesn't break the game…)