Yumi with ROS and Gazebo

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Hey guys,

I'm trying to set up ROS to simulate the ABB IRB1400 (yumi). Here is the link to all the files I'm using: https://www.dropbox.com/sh/n9lt6byp80...

So, when I run roslaunch yumi_gazebo test1.launch, I get the robot simulated in gazebo, and all the controllers load correctly on checking with rostopic list. However, I get the following error message:

rospy.service.ServiceException: transport error completing service call: unable to receive data from sender, check sender's logs for details  
[INFO] [WallTime: 1464673030.319692] [5.567000] Shutting down spawner. Stopping and unloading controllers...

Any help would be great, thanks!

PS: I'm using ROS Indigo on Ubuntu 14.04.4 with Gazebo 7.1 manually compiled.