Hmm. I'm going to talk nerd here.
Sadly, your save file will be left on the old computer, even when you transfer the game folder to the new computer. And I suspect it's the save data that's causing the fatal error. So, if the game is still making the fatal error on the new computer (without the save data), that's worrying for me.
But, then again, on the later versions of the game, it automatically imports a save data whenever it detects a "Backup (version).nbb" file in the game folder.
And "Backup (version).nbb" files are always created every time the game detects you're playing a new version.
Wherever the error is happening, that's where the "Error Log(Date).txt" should be created. (The same folder as where the .exe is located)
We have two options:
1. We try our best to salvage what we can get from the corrupted save data. (We will use the File Utility for this, which can be a bit complicated. That or you share with me your "Backup (version).nbb" and I'll do it for you.)
2. You delete the save data and make a fresh start. (Ouch, but it's easy. It's in the Settings of the Main Menu.)