Crash Report or Log: https://gist.github.com/Americannoli/ffd47b1124c89460f22231518aceedc2

Always crashes me and others randomly.

[BuildCraft]: [lib.tile] Unknown owner (null) for class buildcraft.transport.tile.TilePipeHolder at BlockPos{x=-147, y=74, z=317} when reading from NBT

Take a look at the log it shall help. Thank you.

Also lemme know if I can fix it!

the unknown owner thing is just a warning though, not something that crashes you, could you provide the crashreport itself?

[Client thread/WARN] [BuildCraft]: [lib.tile] Unknown owner (null) for class buildcraft.transport.tile.TilePipeHolder at BlockPos{x=-134, y=77, z=320} when reading from NBT

Sorry I missed this at first: that error should normally only be shown on the server thread, not the client thread! So it turns out this is is logging completely uselessly.

This has been fixed and released as part of 7.99.24.3