Crash upon loading into existing world

[Arae-1]

every time I load into an existing world, I get a crash with the error "UUID string too large"
here is my crash log
crash-2025-01-01_14.18.40-server.txt

[thexaero]

Do you have any files in the player config folder that weren't created by the mod? Did you rename any files there?

[Arae-1]

not that I am aware of, I haven't changed any files or done anything like that manually

[thexaero]

Can you check if there are any unusual files there that aren't just <user UUID>.toml?

[Arae-1]

no <user UUID>.toml but there is <user UUID>.dat and <user UUID>.dat_old

[thexaero]

I mean the data\openpartiesandclaims\player-configs folder with OPAC player configs.

[Arae-1]

oh in there, yeah there's nothing apart from <user UUID>.toml and a folder called sub-configs

[thexaero]

The error is claiming that there's a file there with a name that is too long to be a UUID.

[Arae-1]

I have minecraft on an exFAT partition, would that play into anything?

[Arae-1]

comparing my UUID against the name of the file, they're identical

[thexaero]

That is very strange. Can you send me the file?

[Arae-1]

7bc13e85-ec51-4ece-b19d-71998a26e8bd.toml.zip

[thexaero]

Ok, so there is something going on there with AppleDouble files. I think it's related to where the "too long" file name comes from.
Can you test the following jar file and send me the new crash report? download link

[Arae-1]

crash-2025-01-07_21.00.07-server.txt

[thexaero]

Thanks! It all makes sense now. Now I'm wondering what else these AppleDouble files can break.

[Arae-1]

not sure but they have caused me significant grief in the past with other minecraft related things