If you first install Jedi Items + 3.0.0, then Duplisaber in that order, it works and you can install anytime during the game (relatively early is best).
The dissappearing texture glitch for Lightsabers, thanks to Hassat Hunter for this fix:
https://steamcommunity.com/app/208580/discussions/0/496880503073184909/
I wanted to say a big thank you to all of the Mod Authors that have let me include their Mods in the Expanded Galaxy Project.
While continuuing to work on the Port and the main Project I will continue looking for decent mods / fixes for the second game to include.
Also still looking for testers, suggestions and modders to get involved with the project, if you would like your mod included or would like to get involved then please message me on here or on Discord.
I removed the Cortosis Armor from the Jedi Items mod after someone commented on a glitch in the installer. Now, the mod can be copied to Override without the need for tslpatcher. Once the mod is good to go with screenshots and some more beta testing, I will release it.