[1.8]Adding a mod into a workspace doesn't work

[JTK222]

Hey, I am trying since a few days to implement a Coremod I Made for my mods into the workspace but it crashes every time I Press a Key (because of a Keyhandler its saying that the .isKeyDown Method isn't existing)

But it is working outside of development environments.

I have tried to add it into the Mods folder, and I have also tried to add it into the Java Build Path of the project.

 

Thanks in advance for any help.

 

Crashlog: http://hastebin.com/ofoqimosig.dos

[Choonster]

You're trying to call methods with SRG (obfuscated) names in the deobfuscated environment. The two most likely reasons for this are that it was built for the obfuscated environment or that it was built using an older version of the MCP mappings.

 

To build a mod for the deobfuscated environment, use

gradlew jar

instead of

gradlew build

(which reobfuscates the mod). You can change the MCP mappings version using the

minecraft.mappings

variable in your build.gradle script.

[JTK222]

Big thanks ^^

I have already though that I need to export it in a different way than build.

But I wasn't able to find it (maybe because my English isn't good enough )

I am using a fresh Install of the Forge workspace for both mods so both are exactly the same.

But also thx for your suggestion with the MCP mapping could help me in the Future ^^