[V13.5 ~ Savefile Troubleshooting]

So I've just downloaded 13.5 after not playing for almost three years (based on my save files?) 
Saved in my room in the League admin area, opened 13.5 (after using the updater to go to 13.5.6 i think it was), and opened the game.
Took forever to load, and the moment I went to hit enter at the eye-thing part of the title screen the game froze and gave me a massive error message. Am I missing something? Attaching game file and error.txt

errorlog.txt game.rxdata

[E18 Gym Battle Difficulty]

[spoiler] okay. so I just beat this gym, after reading about the Ferrothorn idea. Thanks for that, btw. Now, I am not the best player. My teams are honestly usually like Harvy's, hit hard and fast and be done. The main issue I had with this gym, and others in the past, is the amount of RNG the Field Effects bring into battle. Normally they're not too bad once you learn how to destroy or change them up, but this one cannot be changed, and has actual damaging RNG events (hitting rocks). I wouldn't mind the rocks and sand making accuracy go to hell or boost rock/ground moves, but the extra damage you can't predict off an attack seems just a bit much. But like I said, maybe I'm just bad lol. Loved the chapter, nonetheless!! [/spoiler]