android - Cannot create Android package with Gradle

Question

I made a JavaFX project and I generate a Gradle build file with eclipse. My build file is in /workspace/Puzzle_FX i use the JavaFXPort get started, but when i type ./gradlew android i got this error :

Unzipping /Users/usr/.gradle/wrapper/dists/gradle-1.12-all/2apkk7d25miauqf1pdjp1bm0uo/gradle-1.12-all.zip to /Users/usr/.gradle/wrapper/dists/gradle-1.12-all/2apkk7d25miauqf1pdjp1bm0uo
Exception in thread "main" java.lang.RuntimeException: java.util.zip.ZipException: error in opening zip file
    at org.gradle.wrapper.ExclusiveFileAccessManager.access(ExclusiveFileAccessManager.java:78)
    at org.gradle.wrapper.Install.createDist(Install.java:47)
    at org.gradle.wrapper.WrapperExecutor.execute(WrapperExecutor.java:129)
    at org.gradle.wrapper.GradleWrapperMain.main(GradleWrapperMain.java:48)
Caused by: java.util.zip.ZipException: error in opening zip file
    at java.util.zip.ZipFile.open(Native Method)
    at java.util.zip.ZipFile.<init>(ZipFile.java:220)
    at java.util.zip.ZipFile.<init>(ZipFile.java:150)
    at java.util.zip.ZipFile.<init>(ZipFile.java:164)
    at org.gradle.wrapper.Install.unzip(Install.java:160)
    at org.gradle.wrapper.Install.access$400(Install.java:29)
    at org.gradle.wrapper.Install$1.call(Install.java:70)
    at org.gradle.wrapper.Install$1.call(Install.java:47)
    at org.gradle.wrapper.ExclusiveFileAccessManager.access(ExclusiveFileAccessManager.java:65)
    ... 3 more

I install the Android SDK and I use gradle command to download all file. I'm working on Mac OS X Yosemite. I installed gradle with brew command. So how can I create my Android apk with gradle to convert my JavaFX project to Android file with JavaFXPort ?