DaemonUmbra

So you download the jar, double click it, and it appears to re-download itself?

Have you tried uninstalling every single version of Java and then reinstalling, or were you reinstalling one at a time?

I think I see the issue, your computer is trying to launch the installer as an applet rather than a full-fledged program. Run this once and try again.

1.12 is no longer supported on this forum. Please update to a modern version of Minecraft to receive support.

1.8 is no longer supported on this forum. Please update to a modern version of Minecraft to receive support.

1.12 is no longer supported on this forum. Please update to a modern version of Minecraft to receive support.

If it changes we'll need new units which will spawn another debate, as mB (or milli-buckets) is inherently a metric measure and is by definition, 1/1000th of a bucket (which itself is a full cubic meter of fluid because Minecraft).

Please don't make duplicated threads. What version of Minecraft are you using?

To run the installer you need to have Java installed

1.7 is no longer supported on this forum. Please update to a modern version of Minecraft to receive support.

You're not a modder, you're someone who used a cookie-cutter mod builder who now has an ego as a result. Learn Java.

1.9 isn't supported either... if you want support use 1.14.4 or 1.15.2

and because you use MCreator you got this far and are now bitching because you can't get something to work and you feel we should just do the work for you when you haven't even put in the effort to learn Java. There is a reason we dislike MCreator and you are only reinforcing that opinion. Learn Java.

1.12 is no longer supported on this forum. Please update to a modern version of Minecraft to receive support.

There is no exe in the installer and it should not be extracted. Please provide screenshots.

Your Mod ID is in fact the problem if it is "Help"... in case you didn't notice mods ids can't contain capital letters as they are not between a-z or 0-9

It shouldn't be necessary, what's making you think this is needed?

What version of Minecraft is this?

1.12 is no longer supported on this forum. Please update to a modern version of Minecraft to receive support.

Please keep this forum in English. Please read the Logs section of my signature below and provide the appropriate log in the appropriate manner.

1.12 is no longer supported on this forum. Please update to a modern version of Minecraft to receive support.

What version of Minecraft are you using?

What version of Minecraft are you using?

Really old Minecraft versions are no longer supported on this forum. Please update to a modern version of Minecraft to receive support.