Ok, I packed the save into an archive.
Heres the rar package:
https://www.netfiredesign.com/~vince/Buttons/ULUS101240000.rar
And if you need the zip, here it is:
https://www.netfiredesign.com/~vince/Buttons/ULUS101240000.zip
I'll try commenting the line like you suggested and see if it still crashes. But if it doesnt seem to crash for you, it usualy just crashes randomly. It doesnt really crash in specific points for me. I havent tried the game since the 3rd crash. But 2 out of the 3 crashes were from fighting a boss. But the 3rd one was from me walking around like I stated. So the crashes might just be random.
Edit: Oh, and so I dont get you walking around like crazy on the save, I tried again after the crashes of the bosses and just tried beating the bosses faster so I already beat Ibris and was defeated by the Dread Knight, and I got grant to the lunar tower from costner, so thats where the save is at now.
Edit 2: I'm terribly sorry. Its like an hour after noon here and I'm not thinking completely straight. Thats a save I backed up on my comp and thats where I'm in jade before I go to fight Ibris. I'm very very very sorry for the confusion. And I'm sorry for bothering you with this.
Edit 3: Ok, I commented the line in the pspbtcnf_game.txt file and I played around the game for a few hours using the gamesave I gave you, I fought the two bosses I got freezes at and I walked around everywhere saving and walking away etc. And I have yet to have a freeze. So its the prx. So I will wait for future releases of it if there are future releases. If so I look forward to them. Anyway, its a great app!