gradlew.bat setupDecompWorkspace Error

D:\Games\Minecraft\Forge 1.7.x>gradlew setupDecompWorkspace
Exception in thread "main" java.lang.reflect.InvocationTargetException
        at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
        at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.
java:57)
        at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAcces
sorImpl.java:43)
        at java.lang.reflect.Method.invoke(Method.java:606)
        at org.gradle.wrapper.BootstrapMainStarter.start(BootstrapMainStarter.ja
va:30)
        at org.gradle.wrapper.WrapperExecutor.execute(WrapperExecutor.java:127)
        at org.gradle.wrapper.GradleWrapperMain.main(GradleWrapperMain.java:58)
Caused by: java.lang.NoClassDefFoundError: org/gradle/launcher/bootstrap/Process
Bootstrap
        at org.gradle.launcher.GradleMain.main(GradleMain.java:23)
        ... 7 more
Caused by: java.lang.ClassNotFoundException: org.gradle.launcher.bootstrap.Proce
ssBootstrap
        at java.net.URLClassLoader$1.run(URLClassLoader.java:363)
        at java.net.URLClassLoader$1.run(URLClassLoader.java:355)
        at java.security.AccessController.doPrivileged(Native Method)
        at java.net.URLClassLoader.findClass(URLClassLoader.java:354)
        at java.lang.ClassLoader.loadClass(ClassLoader.java:425)
        at java.lang.ClassLoader.loadClass(ClassLoader.java:358)
        ... 8 more
Caused by: java.util.zip.ZipException: invalid LOC header (bad signature)
        at java.util.zip.ZipFile.read(Native Method)
        at java.util.zip.ZipFile.access$1400(ZipFile.java:56)
        at java.util.zip.ZipFile$ZipFileInputStream.read(ZipFile.java:679)
        at java.util.zip.ZipFile$ZipFileInflaterInputStream.fill(ZipFile.java:41
5)
        at java.util.zip.InflaterInputStream.read(InflaterInputStream.java:158)
        at sun.misc.Resource.getBytes(Resource.java:124)
        at java.net.URLClassLoader.defineClass(URLClassLoader.java:444)
        at java.net.URLClassLoader.access$100(URLClassLoader.java:71)
        at java.net.URLClassLoader$1.run(URLClassLoader.java:361)
        ... 13 more