DaemonUmbra

All of your mods appear to be for 1.7.10 while you're launching a 1.12.2 client.

When using the vanilla launcher debug.log is found in .minecraft\logs and should be posted using Pastebin or GitHub Gists, where possible use the upload button rather than copy-pasting the contents of the file.

Please post your debug.log in the manner described in my signature.

You are running 1.12.2 with 1.7.10 mods in your mods folder.

One or more of the files in your save is corrupted, you might be able to delete BCMod-Items.dat and have the world work but I'm not sure what it will change.

The command prompt is now looking in a different place (the place before the > is the "working" folder where cmd is looking)

And that message that the app can't run showed up multiple times it wasn't just a fluke, right?

Can I just have you confirm the URLs you have gotten Java and Forge from?

Please post your fml-client-latest.log in the manner described in my signature.

I honestly can't think of a reason that message would pop up in this case.

Is your Operating System 32 or 64 bit?

Is the forge installer in your steam library? (If so, why?) and did you include the ".jar" at the end of the installer name?

You need to include the .jar extension when using the java command. and use CMD, the command does not work in powershell, you can open a cmd prompt in powershell by typing cmd.

Please make sure you’re using cmd and not powershell when running the command, Powershell has slightly different command syntax.

If you need to use a packet system SimpleImpl is rather easy to use. For raw packets I believe you will want to look at the NetworkRegistry

Yes. If that is the @Mod annotation from your mod please post your mod's source code in a GitHub repo, be sure to have the "root" of the repo in the same folder as the build script and the .gitignore provided by the Forge MDK.

A warning like that comes from the dependencies string inside the @Mod annotation, not the build script.

I recommend you also check out the StopModReposts project and install their browser extension, it will intervene and alert you when you visit a site on their blacklist.

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

I believe Pastebin and GitHub’s Gist service will allow files larger than direct uploads to the forum, both sites are linked in my signature, I know Pastebin has a limit of 512K, not entirely sure on the Gist max but I believe it is higher.

1.7.10 is no longer supported on this forum. Please update.

If you DID go through the official site please note that the links are monetized through adfocus and only the skip ad button in the top right of the adfocus page will get you the Forge download, under that top banner is an ad that Forge has no control over, that part is up to adfocus.

Something tells me you didn’t download Forge from the Forge team, as Forge does NOT install third party services. The only official place to download Forge is the files section of THIS site (http://files.minecraftforge.net) any other hosts offering a Forge download are reposting Forge files without permission and/or may be installing malware on your computer.

By "log" we don't mean the stuff in the console window that pops out, copying and pasting hat has weird formatting anyway. No we want the debug.log file that is generated, it's in your logs folder and has everything previously reported to the console window and possibly more. From the presence of an hs_err_pidxxxx.log this is likely something happening within Java itself, so please include that as well.