Unmet dependencies for fetch gazebo simulator and moveit

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I'm running Ubuntu 14.04. Previously, I had the fetch gazebo simulator and moveit packages installed.

Recently, I have not been able to run or reinstall them. The error messages that I have been seeing are related to unmet dependencies.

I've tried running sudo apt-get install -f to try and fix the dependency issues but the problem has not been resolved. What other things should I try to fix the issue?

Reading package lists... Done
Building dependency tree       
Reading state information... Done
Some packages could not be installed. This may mean that you have
requested an impossible situation or if you are using the unstable
distribution that some required packages have not yet been created
or been moved out of Incoming.
The following information may help to resolve the situation:

The following packages have unmet dependencies:
 ros-indigo-fetch-moveit-config : Depends: ros-indigo-moveit-ros-visualization but it is not going to be installed
E: Unable to correct problems, you have held broken packages.