The error seems similar, but with version 1.14.

I can't reproduce your error using the RetroPie provided binary package for PPSSPP or a source build for lr-ppsspp. I tried your game and another one, though both are in .iso format. I didn't find a pre-built CSO compressor for armhf and I don't have another OS handy right now.

Not sure what to try next - did you do any OS changes that could impact the normal operations, like overclocking ?

Thanks for (re-)testing.

Will do some more detailed testing, but assume this is fine now. Any idea why the change did not apply to the binary?

Probably wasn't rebuilt after the change or something else occured during the binary build which didn't update it. We're looking into it.

And is there a place I can toss a coin for coffee or similar for the support? 😉

See the bottom of the forum pages for the donation link.

I am using the latest RetroPie 4.8.2 and all psp games are working here.
Please provide more info especialy the verbose log: https://retropie.org.uk/forum/topic/3/read-this-first