valkyrien skies crashes | Valkyrien Skies | Page 1

severe wedge Mar 29, 2026, 6:02 PM

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i had a modpack, it kept crashing, and i narrowed it down and found out its because of vs, i removed every mod besides just valkyrien skies and kotlin for forge, and i still cant enter a world

drifting helm Mar 29, 2026, 6:06 PM

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logs

severe wedge Mar 29, 2026, 6:11 PM

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okay here

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The game crashed: unexpected error
Error: java.lang.ClassCastException: class net.minecraft.world.phys.Vec3 cannot be cast to class net.minecraft.core.BlockPos (net.minecraft.world.phys.Vec3 and net.minecraft.core.BlockPos are in module [email protected] of loader 'TRANSFORMER' @25ffd826)

drifting helm Mar 29, 2026, 6:12 PM

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ah

neon barnBOT Mar 29, 2026, 6:12 PM

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Vec3 cannot be cast to BlockPos

If you are getting the crash:
Unexpected error: Vec3 cannot be cast to BlockPos

then you need to use any launcher other than vanilla.

Curseforge app, modrinth app, prism launcher, multi mc, poly mc, etc all work. Only vanilla is broken.

We haven't been able to figure out why. If you experience this and are already using a custom launcher, then please share your modpack so we can try to narrow down the cause.

severe wedge Mar 29, 2026, 6:12 PM

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Huh?

muted dove Mar 29, 2026, 6:16 PM

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use anything other than vanilla launcher

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i recommend prism

severe wedge Mar 29, 2026, 6:17 PM

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muted dove use anything other than vanilla launcher

so like the curseforge app for example?

muted dove Mar 29, 2026, 6:17 PM

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yeah

severe wedge Mar 29, 2026, 6:17 PM

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okay ty

#valkyrien skies crashes