Weird, it’s the first time I’m hearing about this problem. Apparently one of the encrypted file isn’t being properly read by your game. It might’ve been damaged when you unpacked the game so I’d recommend to try and unzip the game once again and transfer your save from one game to the other (It’s in the “www” folder so just transfer the whole save folder it from one www folder to the other.)
If it doesn’t I’ve made two test versions that should solve the problem:
The first one is here:
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And if this one doesn’t work the second one is here:
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I’m sorry, since I can’t reproduce this bug I had to make two versions but at least one of them should solve your problem. Also, in case you didn’t know you can hold “CTRL” in-game to fast forward the text and lose a bit less time to see if the problem gets solved.
Thank you for reporting this issue and if one of those solutions worked I’d be grateful to know which one did!