Just making sure this thread has documents the current position.
Text from post http://forums.plex.tv/discussion/comment/1262526/#Comment_1262526
For LG TV Medialink and LG TV Smartshare it is now necessary to whitelist the IP Address of the LG TV within the Network Server settings as these apps cannot authenticate. See the Release notice for Plex Media Server 1.1.3.
There were issues for Medialink in 1.1.3 and these have been fixed in version 1.1.4.
So first ensure the IP Address of the LG TV is fixed as either a static IP Address manually configured and outside the DHCP Range in the router (restrict part of the subnet for static IP Addresses) or an easier option to use the router’s DHCP Reservation function to reserve the IP Address for the LG TV’s Hardware Mac Address.
Once it is fixed and it does not change on power off/on, then you can enter that IP Address in the Plex Media Server settings.
It should be entered with no trailing or leading spaces in the following settings field
Settings / Server / Network / Show Advanced
List of IP Addresses and Networks that are allowed without auth
Save the changes and it should take effect immediately
