Mod exportation:build failed

[einspieler13]

I have tried to make my first mod and in the test world it works perfekt.But If i try to export my mod with gradlew build it says:

 

#################################################
         ForgeGradle 1.2-SNAPSHOT-fb514d3
  https://github.com/MinecraftForge/ForgeGradle
#################################################
               Powered by MCP unknown
             http://modcoderpack.com
         by: Searge, ProfMobius, Fesh0r,
         R4wk, ZeuX, IngisKahn, bspkrs
#################################################
:compileApiJava UP-TO-DATE
:processApiResources UP-TO-DATE
:apiClasses UP-TO-DATE
:sourceMainJava UP-TO-DATE
:compileJava UP-TO-DATE
:processResources FAILED

FAILURE: Build failed with an exception.

* What went wrong:
Execution failed for task ':processResources'.
> Could not copy file 'E:\Downloads\Spiele\Dokumente\Forge\src\main\resources\mcmod.info' to 'E:\Downloads\Spiele\Dokumente\Forge\build\resources\main\mcmod.info'.

* Try:
Run with --stacktrace option to get the stack trace. Run with --info or --debug option to get more log output.

BUILD FAILED

Total time: 19.424 secs