Every time I try to set up the menu customization option, the install fails, and on a 3 B+ with a Samsung 64gb SDXC card, the button does nothing. I have tried multiple different Raspberry pi 3B+'s and sd cards to no avail. Tests were done on both ethernet and wifi.
Pi 3 B+ with fresh osmc install
32 GB SDHC Sandisk ultra card
Also tried a 64gb SDXC Samsung card.