Gradle throws exception on Sync or tasks

On Ubuntu (14) using Intellij IDEA (15.0.2), when "Refresh all gradle projects" for Gradle (2.9) or running any of its tasks it gives the following exception:

Error:org.gradle.listener.ListenerBroadcast.<init>(Ljava/lang/Class;)V 

im able to run gradle tasks from command-line, i also tried this after cleaning and rebuilding, any ideas? Should i check some log file? Thanks