So during my Plex not working NIC rearranging fiasco I was doing some digging to try and find the cause. It may have been related to some broken system update, not 100% sure. I did do a system update the other day, which had some broken dependencies,

This was the command that updated my broken hal dependency and got my system updated. Apparently the system was not configured to update with the clearos-core? Anywho, this did the job, and as soon as the update was finished Plex was working.

yum --enablerepo=clearos-core,clearos-contribs upgrade hal* libvirt* yum -y update

After doing a bit of searching I came up on this post that had the answer. I find the ClearOS forums search function to be horrible, and Google doesn’t seem to pick up on it much. Maybe this helps?