Ugdhar

You extend the Block class. That's about as simple Java as it gets, so if you do not understand that, I would strongly advise googling basic Java terms and HOWTOs. Without some understanding of the very basics like extending a class or overriding a method, you will Not Have a Good Time modding.

If it was the same problem, the solution is right there. If not, then it is not the same, and you should start a new thread and post logs please.

In your game directory logs folder, by default %APPDATA%\.minecraft\logs (on Windows)

That's the crashlog, not the debug.log. The debug.log has quite a bit more information in it.

Please post your debug.log as described in the EAQ. That should give enough info to get starting helping.

It looks like it, but it looks like that log is for 1.12, which is no longer supported. Post debug.log from a modern version for support.

You do not need a separate JRE if you download the JDK, as it comes with one in JAVA_HOME\jre

1.12 is no longer supported due to age. Please update to a modern (1.14.4/1.15.2) version to receive support. More information on supported versions can be found in the LTS link at the top of every page.

Really old versions are no longer supported. Please update to a modern (1.14.4/1.15.2) version to receive support. More information on supported versions can be found in the LTS link at the top of every page.

Make sure you read the Optifine changelog for details on the versions of forge it is compatible with. Currently there is no Optifine that works with forge for 1.15.2.

1.12 and really old versions are no longer supported due to age. 1.14.4/1.15.2 are the currently supported versions. The LTS link at the top of every page gives more detail on supported versions going forward. Post the debug.log as described in the EAQ, for a supported version, and someone can take a look and try to give you a hand

As mentioned, always read the Optifine changelog, this versions explicitly states it is not compatible with Forge. Not sure if there are any other problems, but start by removing that one

Looks like you got the wrong version of minecraft. You do not want the one from the Microsoft Windows 10 Store thingy (Bedrock Edition) if you want to mod. You want the Java Edition from www.minecraft.net

1.12 is no longer supported due to age. Please update to a modern (1.14.4/1.15.2) version to receive support. More information on supported versions can be found in the LTS link at the top of every page.

As far as I know, no, unless you manually change the installation settings prior to launch to change which version it launches with. I'm not totally sure, I thought I saw Someone Of Importance say once that it's not, but I don't remember for sure, so maybe? You could always make a post in the suggestions forum! (or search it first to see if it's there already w/a response)

Which blog are you speaking of? Do you mean the forums? I searched "1.7.10" and got posts going back to 2012. Anything beyond that you'd have to search the web I'd imagine. Good luck to you!

You don't. The purpose of installations is to keep saves separate so they do not get loaded with different versions of the game, to avoid potential corruption.

You shouldn't post a screenshot if it's not yours for something like this. Just saying, it's misleading and doesn't really help. So I'm not 100% sure what's going on, but scanning through the debug.log this caught my eye: So, Bountiful is generating an error, and if you notice the subsequent errors about token recognition errors, the tokens it is complaining about spell out "SpawnerNBT". Unfortunately I can't tell where it's coming from/what is causing it. Thing still seem to keep going after this though. Then: So, I would remove the Bountiful mod, as it appears it is using Kotlin, which I am not familiar with at all. I believe it's another language that runs in the Java JVM maybe? But it looks like you not having a Kotlin language provider for the JVM is what is making it crash. *edit: Sorry, just realized you noticed the Kotlin thing, I was distracted by your completely unrelated screenshot. A quick google search: https://kotlinlang.org/docs/reference/faq.html

If I were going to dev for unsupported versions, I would probably just use google/forum search. Support requests here (not sure if that includes "is there an archive for xxx outdated version?") for old versions get locked by moderators.

Please post logs and updated code. Code is best shared using a github repo, so even if you forget to share a piece, someone can still look at it.

Really old versions are no longer supported. Please update to a modern (1.14.4/1.15.2) version to receive support. More information on supported versions can be found in the LTS link at the top of every page.

What if you remove the .get() from the ModBlocks.WAND_INFUSER in the builder create call? Looking at an example elsewhere that shows it using the actual supplier and not the Block.

I think everything except registration events/deferredregisters, and I think the setup events, are on the forge bus.

1.12 is no longer supported due to age. Please update to a modern (1.14.4/1.15.2) version to receive support. More information on supported versions can be found in in the LTS link at the top of every page

More information is needed, there should be a logs folder in the run folder in your project, post the debug.log from in there. If it will fit here, use spoiler tags, otherwise you may have to post it on an external site and post the link here.