Ugdhar

Use the installer, to be honest I am not even sure what the launcher is for lol.

The most recent one is not there, only the archive gzipped ones.

Are you clicking on the installer, or using java -jar /path/to/forgeinstaller.jar ? And also, you probably want the installer download from the forge website, not the launcher.

Is that when you try running minecraft with forge from the launcher?

When you post the link to your debug.log, post a link to your github as well

Please post your debug.log, and also it would be helpful if your code were posted as a github repository, it is much easier to read there, plus if someone wants to debug it they can clone/download it and build it

Minecraft comes with a bundled Java 8 JRE it uses I'm not 100% sure to be honest, but I don't think you need it for running minecraft with forge, however I would keep it so that if you need to run the installer for another version of forge (the Nether update is coming to vanilla!) you will have it.

You definitely need java installed to run the installer. It can be a JRE, you don't need the JDK unless you are writing mods. *edit: evidently it looks like the openjdk comes as a whole bundle, not separate jre/jdk lol. Make sure you get java 8 hotspot. https://adoptopenjdk.net

That likely means that .jar files are not associated with java on your mac. I don't use a mac, so I do not know how to fix it, but you should be able to put "java -jar " in front of what you have to run it.

Did you check the optifine changelog to make sure you're using the version of forge compatible with the version of optifine you're using? That'd be the first thing I check!

I would try updating botania *edit: the reason I would is this line: and also comparing the date of botania vs the release date of the version of forge you are using.

That's the same error you had before. You need to figure out what version of java you have.

Make sure you are using Java 8. java -version at the commandline will show what version you are using.

I believe the issue tracker url can be whatever you want/have for an issue tracker address. The update JSON format I believe is this: https://mcforge.readthedocs.io/en/latest/gettingstarted/autoupdate/#update-json-format

The package names are pretty good, gui stuff will be in net.minecraft.client somewhere.

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You should find the forge jar in the Referenced Libraries section of your IDE, it will contain the minecraft and forge sources. There is also a client-extra jar which contains model jsons and other client stuff.

Please start your own thread if you have an issue, this thread is nearly 2 years old. Also please note that 1.12 is no longer supported on these forums due to age. More information on supported versions can be found in the LTS link, at the top of every page.

Yeah, didn't notice it at first until I saw on github that the folders are separated by a slash, so the one with the dot was considered a single folder name. Glad it helped!

So it looks like perhaps your folder structure in your resources is broken a little bit, instead of being assets/mobfighters/models/item you have assets.mobfighters/models/item

Unplug any devices connected to your computer except the keyboard, mouse, monitor, and internet. Make sure there are no USB devices plugged in like bluetooth adapters or any other thing.

Yup, if you can host it on an external paste site and post a link here that's probably best, otherwise use spoiler tags

1.12 is no longer supported on these forums due to age. Please update to a modern version if you wish to receive support here. More information on supported versions can be found in the LTS link at the top of every page.

Please post your codebase as a github repository, it makes it much easier to read and see how things fit together. Also, please post complete logs, not just the lines you think are important. Spoiler tags (the eyeball button in the toolbar when creating a post) help make the thread not be 10 miles long.