EDIT: Replacing Skill.img does nothing. :(
I did find the RechargeFail animation in the JMS Effect.wz file, but copying it over to the SEA equivalent does nothing... meaning that a more significant mod needs to be done (Which requires a skill that I haven't acquired yet).
EDIT: Not really meaning to rant here... but I'm curious to know: in GMS, there aren't a huge number of typos? In SEA, nearly all the dialogs have a problem with the apostrophe character replaced with a 'f' instead, and there are grammatical errors in some dialogs.
Tear once said "Are you hungries again?". D:
Not to mention that the game became really, really unstable after the Angelic Buster patch.