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Hmm, I'd try using the regular pso2 launcher and do a full filecheck, if the game works afterwards try then using the tweaker I guess.
Chance there could be some files missing or something.

...

Not sure if it's this issue, but, there was an issue with PSO2 and Windows Defender on Windows 10, have to add the pso2 folder to the exclusion list for Windows Defender.

Not really, each of the files seem to be packages that have more files inside, I think?
So if I'm not mistaken, each of the files could have data related to multiple scenes.

The issues they've been having with cutscenes are related to the story patch, there's 33 files from the update that match with story patch files, that is, there's 33 files from the story patch that...

Link for the tweaker in the first post is down:
"This account's public links are generating too much traffic and have been temporarily disabled!"