Just a heads up that the MV version has some wonky pointers to files that aren't in the zip: !SF_Chest, characters/evil.png, SF_Characters_2 and the cancel1 sound effect are the ones I had to workaround.
That said this is a very cool puzzle event, super helpful to me because I'm still trying to understand how eventing works (plus its one less plugin to worry about clashing with the other plugins). Thanks for putting it together!