No Devices showing up

After starting Marionnet I'm not having any devices showing up. I'm also getting the following error:

=======================================================
 Welcome to marionnet
 Version : 0.90.6
 Source revision : 318 - 2011-02-02 19:27:57 +0100
 Ocamlbricks revision : 229 - 2010-11-23 10:55:39 +0100

 Built in date 2015-06-03 5:05:36 -0500 on system:

        Linux 3.13.0-53-generic #89-Ubuntu SMP
        Wed May 20 10:34:39 UTC 2015 x86_64
        GNU/Linux

 For bug reporting, please get a launchpad account and
 either:
  - report bugs at https://bugs.launchpad.net/marionnet
 or do *all* the following:
  - add yourself to the marionnet-dev team
  - add yourself to the marionnet-dev mailing list
  - write to <email address hidden>
=======================================================

(marionnet.byte:4296): GLib-CRITICAL **: Source ID 731 was not found when attempting to remove it

I was able to get everything working when I used the sudo command, but had a popup that says I shouldn't run as root.