DaemonUmbra

What version are you trying to run? For 1.12.2: Get the 1.12.2 installer For 1.11.2: Get a 1.11.2 vanilla server jar

You are running the installer for 1.11.2... Also, please activate Windows...

Either your server jar is corrupted or you did not rename it:

Run the installer again after renaming the vanilla server, the installer will take a quick look at the jar and skip the step that appears to be giving you issues.

Forge requires Java 8, from there it's just a recommendation to use the latest, I'm not completely clear on what will force gradle to refresh itself from the environment variables, but it might require a reboot to make sure.

I'm afraid there isn't much you can do as a user besides bug them to get a fresh devkit and update properly.

Try removing armoryexpansion

You need to use Java 8, if you need Java 10 for something else Gradle will use whatever Java version you point to with the JAVA_HOME environment variable. (i.e. my JAVA_HOME variable is "D:\Program Files\Java\jdk1.8.0_152")

Pixelmon are trying to use an internal API call that has been removed, Pixelmon needs to be updated

Please use a site like pastebin or GitHub's Gist, it's easier for people trying to help you when you use a site that will display the file rather than offering "Free or Premium download?"

1.7.10 is no longer supported on this forum, if you want assistance you'll need to update.

1.7.10 is no longer supported on this forum. If you are part of the TEALS-K12 team I found through a quick google search I highly suggest the project be updated for a more recent version of Minecraft.

Extra Utils 2 and Buildcraft are having integration issues

If you can sniff out the last version of forge that worked you could use that I suppose, but it's on pixelmon for the REAL fix.

Only a mod can do that, but you can rename the topic and put [SOLVED] in front

So I lied, Powershell won't work in this situation, however you can quickly switch to a command line prompt by typing cmd into powershell

Powershell should work in this situation

Pixelmon is being developed with an outdated version of forge, they need to update their code.

When you say "When they are already there" do you mean you downloaded them yourself? Try this:

Google Translate turns it into an error I'm more familiar with, "An existing connection was forcibly closed by the remote host" the server log will be the one that has a chance of telling us why the connection was forcibly closed.

No, the jar name always goes after -jar, put the RAM arguments (that's what the -Xmx and -Xms are) before the -jar flag

Seems I've been doing it wrong all this time, derp.

You should NOT need 8G and it is likely to cause periodic lagspikes, the commands I gave you in the other thread should be giving it sufficient RAM. If you are experiencing performance issues during regular gameplay your processor is likely the culprit. Edit: I have been told there are exceptions, however the person I spoke to who regularly gives his modpacks 8G is talking about 8G for his CLIENT, not server, and a streamer who has a very powerful computer

You need to use Java 8, you likely have 10 installed, if you can live without the most recent version of Java uninstall all versions other than 8, if not you will need to go into program files, find the java.exe of Java 8, and replace "java" in my previous instructions with the full path to it (including the name of the file itself this time)