For reference, I tried the nightlies again from scratch and got it working with the following file sizes as of 6/22:
2ship.nro - 30.5 MB
2ship.o2r - 795 KB
mm.o2r - 35.1 MB
I’m getting the following error when booting into 2Ship:
You've launched the Ship with an old game O2R file.
Please regenerate a new gane 02R and relaunch.
Press the Home button to exit...
I used the current nightly builds for switch and PC. Is anyone else experiencing this problem?