DaemonUmbra

Solution: https://bugs.mojang.com/browse/MCL-5638

Have you tried re-installing the launcher?

These are problems you are likely to come back with, and sometimes fixing issues you didn't know you had ends up fixing the issue you were focusing on.

Is this a vanilla or Forge packet we're talking about? And more importantly, why?

Is there a file in .minecraft which has a name that starts with "err"?

You don't see any logs in your logs folder? I don't see how that's possible unless you cleaned it out and haven't run the game since.

Please provide the logs I mentioned earlier: These will be in your .minecraft\logs folder, the link in my signature will take you to a page on the Minecraft wiki that will tell you where this is depending on your operating system. Edit: Also please explain what you mean by Java crashes but the game doesn't

I'm afraid we don't support versions that old. Please update to receive support.

Lauroline was asking about Idea, not Eclipse, and for Idea simply importing the build.gradle will do to start, Idea will have a gradle panel on the right where you can click to execute Gradle tasks, including setupDecompWorkspace..

(Moved to Modder Support) Please don't use text speak, and this might explain your issue.

1.7.10 is no longer supported on this forum due to its age. Please update to receive support. (No, "I need to use this version because of this other mod" is not an exception)

Thread is over a year old, please make a new thread if you have issues.

Please update to a more recent version of the game and see if the issue still affects you.

1.7.10 is no longer supported on this forum due to its age. Please update to receive support.

The specific logs will be fml-client-latest and fml-junk-earlystartup I believe. and to clarify means "Go to the page you downloaded Forge from and copy from the URL bar, then paste it here.

1.7.10 is no longer supported on this forum. Please update to receive support.

Please provide the installer log and if there is one, your debug.log

You can use your own credentials by using the -username and -p program arguments in your launch configuration. Do note that this will result in your username and password being saved in plaintext in the launch configuration files. I'm not sure of other methods of doing this but someone with more dev experience might chime in.

Try 32767 for the input item's damage value in your crafting recipe, I hear that's the wildcard "match any" value. That's already in the example

@Milk Store Typing cmd into powershell should work just fine for opening cmd as it will open a cmd session right inside the powershell window. @Retrem I would not recommend telling people to mess with their registry keys. And please don't hijack threads, make your own thread.

You may need to make a new launcher profile and set the "Minecraft version" to the latest installed forge version.

diesieben07 linked these instructions earlier: please follow them from the beginning (click the diesieben07 replied to a topic, not the topic title).

you forgot a space between -jar and the file name

You just swap the vanilla jar in the command for the forge one. Note: Vanilla server still needs to be in the same folder ad the forge jar.

A file extension is the ".whatever" at the end of a file name, it's the main method by which your Operating system identifies what type of file it is. I think Windows hides them by default.