Richy_T

Sure thing. My world is just under 1GB zipped. Is there a preferred transfer method?

Yes. 1.21.11. Unfortunately, the edit button is not working for me. (Never mind, the edit link in the ... works) If I can't use vanilla, that's fine. I'd be curious to know why as it was working for 1.21.10 but ultimately, I won't complain because the mods are handy. Moreso just reporting to possibly help others. Just to be definitive though, is unmodded forge supposed to be compatible with vanilla or is that basically unsupported?

Not sure if this can be regarded as an issue or not but I'll describe the symptoms and will be interested in the comments. I have a 1.21.10 world and have been playing on a server modded with FallingTree using vanilla clients. As 1.21.11 is out, I wanted to upgrade the world so I installed forge 1.21.11 on the server and copied the world over (I maintain a new directory for each version). Upon trying to access the server with a vanilla client, I get a Network Protocol Error and get kicked off. However, if I try to access the server with a vanilla client and allow the server to create a new world, no error. If I use a forge client with the old, no error. It seems to be the specific combination of using an existing world and the vanilla client. For my purposes right now, I'm fine with using Forge clients. It would be nice to be able to use vanilla (since the mod I use doesn't require client modding). Just wondering if this is in any way possible. Note that I tried removing FallingTree just in case and it made no difference. The logs show Time: 2025-12-12 11:54:23 Description: Packet handling error java.lang.ArrayIndexOutOfBoundsException: Index 18 out of bounds for length 18 at ama.a(SourceFile:114) at hig.a(SourceFile:665) at agp.a(SourceFile:54) at agp.a(SourceFile:12) at hig.a(SourceFile:2377) at adm.a(SourceFile:19) at adm.a(SourceFile:7) at xl$a.a(SourceFile:55) at xl.b(SourceFile:38) at gfj.d(SourceFile:1337) at gfj.j(SourceFile:966) at net.minecraft.client.main.Main.main(SourceFile:250) A detailed walkthrough of the error, its code path and all known details is as follows: --------------------------------------------------------------------------------------- -- Head -- Thread: Render thread Stacktrace: at ama.a(SourceFile:114) at hig.a(SourceFile:665) at agp.a(SourceFile:54) at agp.a(SourceFile:12) -- Incoming Packet -- Details: Type: clientbound/minecraft:bundle Is Terminal: false Is Skippable: false Stacktrace: at abb.a(SourceFile:41) at hia.a(SourceFile:146) at hia.a(SourceFile:125) at xl$a.a(SourceFile:60) at xl.b(SourceFile:38) at gfj.d(SourceFile:1337) at gfj.j(SourceFile:966) at net.minecraft.client.main.Main.main(SourceFile:250) -- Connection -- Details: Protocol: play Flow: CLIENTBOUND Is Local: false Server type: OTHER Server brand: forge -- System Details -- Details: Minecraft Version: 1.21.11 Minecraft Version ID: 1.21.11 Operating System: Windows 10 (amd64) version 10.0 Java Version: 21.0.7, Microsoft Java VM Version: OpenJDK 64-Bit Server VM (mixed mode), Microsoft [redacted]

OK, got a similar warning as above with .5 but FallingTree is working fine. I'm not sure if it's a FallingTree or Forge issue.

Thanks. May still be issues. [19:51:42] [main/WARN] [ne.mi.co.ForgeHooks/WP]: The following mods have version differences that were not resolved: forge (version 59.0.1 -> 1.21.10-60.0.7) Things may not work well. Also had trouble running FallingTree mod but currently verifying that's not a me thing. Yep, not a me thing. [19:54:52] [main/ERROR] [ne.mi.fm.lo.ModSorter/LOADING]: Missing or unsupported mandatory dependencies: Mod ID: 'forge', Requested by: 'fallingtree', Expected range: '[60,)', A ctual version: '1.21.10-60.0.7' Going to see how .5 does.

Was upgrading from 1.21.9. Failed with an error. Reinstalled 1.21.9, good. Installed 1.21.10-60.0.5, also good. Error is [17:35:50] [main/ERROR] [ne.mi.fm.lo.mo.ModDiscoverer/SCAN]: Locator net.minecra ftforge.fml.loading.moddiscovery.ClasspathLocator@7dc51783 found an invalid mod file net.minecraftforge.fml.loading.moddiscovery.ModFileInfo@4b61d0c6 net.minecraftforge.fml.loading.moddiscovery.InvalidModFileException: Illegal version number specified ${forge_version} (forge-1.21.10-60.0.6-universal.jar) I can add more info if needed but I'm guessing this was just a whoops.