This is a fatal flaw. What is unusual is that with 10,000 downloads it has not been reported before, even though everybody should run into it.
I have no Idea what causes it other than incompatibilities in used hardware, software setup or maybe mods.
From the error message, it clearly looks like an incompatible data structure in a save game file. So the only thing I can think of is please delete all your safe games or put them aside and install a new fresh game with completely empty save slots, use no modifications, no emulations and try to reproduce it with a fresh game. If you can please describe the exact steps and I try to reproduce it in my end. Please also give me some information if you have on the hardware and software environment you are running the product on.
Maybe that gives a clue as to the root cause.
This is very odd.