Pinori.ini looks all good. If you attempt to open the Save Data Overview again, does the game still crash?
Viewing the Overview immediately when opening the game worked fine this time. I have been able to trigger the error again, however. After pressing 1, attempting to load the "windows example" Save Data, which produces a different error:
An error occurred while loading your Save Data. Press any key to return to the Title Screen. If you're trying to migrate Save Data from an older version of PyNori, please run it through the Save Update Utility found at https://shirley-xml.itch.io/pynori-suu.
When attempting to view the Save Data Overview after this, the serious error occurs. I've also found that a similar error appears when attempting to access the options menu at this point.
That would explain the error then. The Last Used path gets updated* when you load a save, regardless of if the path is valid (which I should fix). The "windows example" path just provides an example (wow, who would've guessed) as to how you should type your paths when adding new ones to SavePaths.ini. Unless you actually create the folder "windows example" needs and put copies of Pinori.ini, inventory.ini, Runs.ini, and EnemyPopulation.ini in there, it won't work. Loading the Default path should fix this. If you don't need multiple saves, you can turn that functionality off in the Options Menu (or manually change "multisave" to False in Pinori.ini if the Options Menu doesn't work).
* If not this, then the game remains focused on the invalid path, which causes the error.