so i went to join a 1.21.6 server im a moderator in, and accidently clicked single player and found a world called “World1” that was supostitly played on 5/28/25 at 2:34 pm, even though i should only have 2 worlds (1.19.2 modded, and normal 1.8.8), upon trying to fix its corruption, which i assume is due to its .dat file, it gave me an error code “uu: Unknown data version: 0”
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muzikbike
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Creating any world between inf-20100327 and b1.2_02 seems to cause this error whenever the game has to load the world list.
well i did play rd-132211, which i assume to be the first version of minecraft, but it was too laggy for my shitty pc