using the monodevelop debugger with unity 5.1

I am trying to use the monodevelop debugger with unity, but all the methods I've tried haven't worked. When i click the play button at the top corner of monodevelop, it brings up an attach to process menu, with one item on the list: "Unity Editor(Unity)". When i click on that, it will load for a few seconds, and bring up a notice that says "Could not connect to the debugger.". I also tried going into "Run > Run With >" but it's empty. Im at a loss for what to do here, so i'd appreciate any suggestions.

http://answers.unity3d.com/storage/temp/49385-screenshot-29.png http://answers.unity3d.com/storage/temp/49386-screenshot-28.png