There is a way to force CueluxPro to connect to a specific IP address.
In the Cuelux pro folder, where you have you show files and option.xml file, you need to create a file called "suspects.txt".
In this file, type the ip address of your CueCore2.
Restart CueluxPro and now you should be able to see your CueCore2 in the list for univers patching.
Enjoy