Alright, after some more fiddling I might have figured out how to fix it.
The error message references an .ogg file. But in the 1.3 version of the game, the audio is saved in some proprietary container format called rpgmvo, so it's actually looking for the .rpgmvo file of the same name.
Further, for some ungodly reason, RPG maker uses URL encoding for filenames, which means that the displayed filename is wrong. I kept getting a loading error on this file:
1%E5%85%A5%E5%BA%97%E3%81%99%E3%82%8B%E3%81%A8%E3%81%8D%E3%81%AE%E3%83%99%E3%83%AB.ogg
However, this actually means its missing the file
1入店するときのベル.rpgmvo
To fix it, I copied the
Cursor1.rpgmvo to
1入店するときのベル.rpgmvo and now, every time it was supposed to play the missing sound file it plays the simple cursor moving sound effect.
Here's how to fix it for any given loading error:
- Type the filename from the error message out in a text document. This is a bit of a hassle. Don't include the filetype (.ogg for example) or the folder name like "audio/se"
- Put the filename into a url decoder
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to get the actual filename (only necessary if the filename contains url-encoded characters like %E3 or similar (percentage symbol followed by two characters)
- Go to the folder with the missing file - it's going to be under the "www" folder in the game fodler - and find another .rpgmvo file. I recommend the smallest file you can find, so it won't play an overly long sound effect. Make a copy of that .rpgmvo file and rename it to the filename from the decoder with the .rpgmvo extension.
That should do it, though it's a bit of a hassle, so if you're not tech savy, might make more sense to wait for someone to fix it.
Edit: After playing more, I gotta say I don't recommend this method. When you reach the first sex scene, a bunch of things pop up in quick succession and it becomes a real impediment to enjoying the game itself. I'd play the 1.1 version instead or wait for a fix.