Please see the below Information Article addressing the "Super sign software is required" issue and instructions on how to troubleshoot and resolve the problem.
Problem: Media Player does not communicate with laptop/Desktop. Missing software.
Cause: New super sign software installation, or by solid state drive replacement. Re-imaging the solid-state drive.
Solution: Press and hold (Ctrl) key when clicking on hyper link http://www.lgecommercial.com/digital-signage/support/download/supersign
Download Super sign W Player and Manager.
Both pieces of software need to be at the same Version levels in order to communicate with one another when connected on to the same network.
Here is the recommended part(s) that we believe will resolve your problem (if applicable):
USB FLASHDRIVE MAY ASSIST.
Part Description: NONE
Part Number: NONE