Only thing I changed recently was JDK version I think, I updated to the latest, does that break @Mod?

What is the error? Could you copy your @mod line?

Yes,

"@Mod(modid="LetsMod", name="Lets Mod", version="1.0-1.7.10")"

'@Mod is not applicable to type'

 

At

    @Mod.EventHandler
    public void preInit(FMLPreInitializationEvent){

    }

 

@Mod.EventHandler is also errored.

You don't use quotation marks before @mod and after it. If it is work older versions, it can be because forge isn't support java 8 versions yet, but it doesn't cause @Mod error, it just not compile codes and crash game, if you use " before @Mod and at the end of the line, it can be error.

 

@Mod(modid = "LetsMod", name = "Lets Mod", version = "1.0-1.7.10")

 

If you don't have quotation marks I don't know why it gives error, maybe someone help you.

Yeah... no quotes I just started putting quotes around it while typing and remembered the code tag and forgot about quotes...

For 1.7.10

import cpw.mods.fml.common.Mod;

 

For 1.8.0

import net.minecraftforge.fml.common.Mod;

 

Can you try import Mod manually?

Nope

http://snag.gy/NsLxN.jpg

 

I found it. Gradlew setupDecompWorkspace failed. I've tried fixing the error but it doesn't do anything.

http://snag.gy/NsLxN.jpg

 

I found it. Gradlew setupDecompWorkspace failed. I've tried fixing the error but it doesn't do anything.

It clearly tells you whats wrong.

I got it now. Thanks. I just decided to install jdk to my c drive, which works fine now.

Nevermind. I successfully ran setup, but @Mod annotations still error.

Did you try checking the file PATH under environmental settings when you set up JDK?  That's a long shot but might be worth checking