1.7.2 - java.lang.ClassCastException

[praetorianer777]

Hello guys,

 

i am new here and started by doing this http://www.minecraftforge.net/wiki/Basic_Modding tutorial...

When i try to start minecraft from eclipse, it throws an error:

 

 

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[main/INFO]: Setting user: Player259
Exception in thread "main" java.lang.ClassCastException: sun.misc.Launcher$AppClassLoader cannot be cast to net.minecraft.launchwrapper.LaunchClassLoader
at cpw.mods.fml.common.ModClassLoader.<init>(ModClassLoader.java:46)
at cpw.mods.fml.common.Loader.<init>(Loader.java:177)
at cpw.mods.fml.common.Loader.instance(Loader.java:156)
at cpw.mods.fml.common.registry.FMLControlledNamespacedRegistry.add(FMLControlledNamespacedRegistry.java:318)
at cpw.mods.fml.common.registry.GameData.registerBlock(GameData.java:797)
at cpw.mods.fml.common.registry.GameData.register(GameData.java:709)
at cpw.mods.fml.common.registry.FMLControlledNamespacedRegistry.addObject(FMLControlledNamespacedRegistry.java:73)
at net.minecraft.block.Block.registerBlocks(Block.java:243)
at net.minecraft.init.Bootstrap.func_151354_b(Bootstrap.java:457)
at net.minecraft.client.Minecraft.<init>(Minecraft.java:315)
at net.minecraft.client.main.Main.main(Main.java:89)

 

 

 

I don't know what i am doing wrong, i used google and search here in that forum, but nothing works  :'(

 

Someone have an idea whats going wrong?

 

kind regards

 

*and sorry if i have a bad english, its not my best language

[Abastro]

It would be a temporary error.

Refresh(F5) or Restart the eclipse and run again.

[praetorianer777]

Ok, i used F5, did restart Eclipse and reboot my computer also... nothing

[praetorianer777]

Hey thx, this worked for me, i only set it up like the tutorial above!

thank you very much

[CodeEasyYT]

Ummm it's been a while I know.

But I get the same problem. The catch is, when I type "gradlew runClient" it works.

Eclipse just gives me the same problem. It compiles everything on command. But not on Eclipse.

Can somebody help me?

 

Edited December 12, 2020 by CodeEasyYT
Fixed typos

[DaemonUmbra]

Please don't necro ancient threads.

If you have an issue please make your own thread.