Rosjava package created by Catkin_create_rosjava_pkg won't build

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Hello,

I executed the catkin_create_rosjava_package package_name command in a standard (working) catkin workspace. When running catkin_make I get the following error:

FAILURE: Build failed with an exception.

* Where:
Build file '/home/bart/joost_ws/src/rosjava_catkin_package_a/build.gradle' line: 40

* What went wrong:
A problem occurred evaluating root project 'rosjava_catkin_package_a'.

> org/codehaus/groovy/runtime/typehandling/ShortTypeHandling

Line 40 in build.gradle contains the command: apply plugin: 'catkin'

Any idea on what is going wrong or which step I forgot? Thanks in advance!