Metal Gear Solid: Peace Walker

[Trokinos]

Using win32 1.0.1-459-g43eaffb and the european version of the game, no cheat enabled.

I got another of those load state problem.
This time i was fighting one of the post-endgame extra ops in which you battle the Cocoon II
After a long fight, finally i reach the point in which the thing finally drop the ladders.

So before climbing on top, i decide to make a save state in case i do something stupid as i really don't want to get through that long boring fight again for some silly mistep, so i press Start to pause the game and press F2 to make the save state.

I get on, fight more and stupidly move a bit too much near the border of the machine and fall on the ground, instead of just re-climbing, i decide to simply press F4 to reload my save state.

And horror, instead of getting me back in the game ... black screen, relaunching PPSSPP and reloading the game does nothing help , the load state will not get me back in that battle, only the black screen.
I attach the screenshot of the error i can see in the log.

And you can download the actual save state i uploaded on that dropbox link

EDIT : finally replayed the battle, with more rocket launchers in order to destroy those guns and exhaust quicker, then i decided to make a save state test by doing the following regularly during the battle

- battle for a while
- press Start to pause then press F2, wait a bit
- press Start again, play a few then press F4

I did this a dozen of time and no problem.

Now i was at the same point as before, the Cocoon II was down to low health enough so it ram into a wall and it drop the ladders.

- press Start to pause, press F2 and wait a bit.
- i move toward the ladders, climb up, then press F4
*black screen and impossible to play further*

A look into the log show the exact same error.
So i guess there's something that happens at that point of the battle that confuse PPSSPP state saving/loading and make the saved state failing to load. Not sure what it can be, as while the error seems to hint at the audio, my save state wasn't made in the middle of some audio dialogue or in the middle of a music track change.