MDW01

Do you have the same mods installed on both the server and the client? It might be thaumcraft so try removing it from the server and the client.

Remove craft studio if that doesn't fix it post the whole log

Youll have to find the mods that add the commands you want for yourself. /home and /tpa are usually included in the essentials mod.

Remove craftstudio

Contact them and ask them to fix the issue.

That is not the crash report that is just the full log could you please post the actual crash report?

You should still include them that way people don't have to ask about it. It is common practice and it makes it easier to diagnose issues if both dev workspaces are set up exactly the same.

Please remove CraftStudio as well then.

Yea that would probably cause it I guess I missed that. Yes, you are correct.

I think one of the mods failed to load can you check the mods tab to make sure all of the mods are enabled and such? Also are you able to go into single player?

Could you post the crash report as well?

So I'm assuming the missing world appear when you run the game in vanilla. Could you try to open a save file in vanilla that was created with forge mods that you don't mind possibly losing (or just make a test one in forge) and tell me what happens? I just want to rule out the possibility of the saves actually being corrupt. Are the regular files in the saves folder or are they empty? Also, do you have any mods that are modifying the main screen, terrain generation, coremods installed that may cause issues?

Sorry that this is happening I don't think that the couldn't get hash for the issue would cause this but I could be wrong. I think it is more likely a permissions issue. Could you post some more details: Could you post a log where you actually enter the game and load up a world? Could you check the permissions on your Minecraft folder? Does this also happen in vanilla Minecraft? When you say the saves are deleted could you check when you create a world if they appear in your saves folder and when if at all they disappear from the saves folder?

Heres some more information on git submodules. https://git-scm.com/book/en/v2/Git-Tools-Submodules Heres a good example from open blocks. They added the open mods lib to the open blocks repository with a git submodule. https://github.com/OpenMods/OpenBlocks

Please post the crash report it gave you.

Did you download the mod pack or just all the mods individually?

I guess you just have to start removing mods till you find out which one it is.

One of my favorite and most complicated blocks the SkyBlock is throwing bytecode errors and nobody likes bytecode errors, which is why forge tells you to contact the mod authors first when core mods are present. You could try removing open mods but it looks like the actual reason for the crash probably is the LoadingPlugin (Quark-r1.4-122.jar)

1.7.10 is not supported on this forum update to receive support.

Sorry, I guess what I said wasn't very clear. What I mean is that you add the libraries git repository into your project's repository as a git submodule.

Yea this can be a bit tricky. Personally, the way I would do it is by adding that repository to yours using a git submodule. This shouldn't be an issue since they have an MIT license just make sure to give them credit. It will then get compiled directly into your code. It is pretty easy to keep the library up to date using git modules and they make it even easier to change the library if you need to.

Your newly packaged library is not backward binary compatible the with the old version. For this reason, some of the library clients that are not recompiled may throw the exception. Pretty much you have made some incompatible binary changes to the library without recompiling the client code. This can mean making changes such as changing non-static non-private fields/methods to be static or vice versa.

Are you using a bucket or fluid from a mod?

Why are you trying to update it? Also if you are inexperienced with modding and forge and gradle this is definitely not a good mod to start with?

The only other thing I can think of it something embedded itself into your Minecraft directory and is messing with things when you launch it with forge so if you want to try deleting your .minecraft folder and reinstall everything.