build of android project gets Error: java.lang.UnsupportedOperationException

I created a gradle android application.
I am using macos 10.7.5.
After fixing up the settings and build for proxy access to maven repos, a gradle build from my terminal window command processor is successful.
When i open the project in intellij 13.1.1 a build is started and always shows

Information:Compilation completed with 1 error and 0 warnings in 3 sec

Information: 1 error

Information: 0 warnings

Error: java.lang.UnsupportedOperationException
Can anyone give me a clue as to what is failing?