I am seeing issues running the tempest1.zip rom in the MAME folder, when using recalbox on my Ri0. This works on my Ri3. I suspect there is an emulator that is not active on the Ri0. Let me know if there is anything i can do to help.

my es_launch_stdout.log shows the following
Powering on HDMI with explicit settings (CEA mode 4)
Powering on HDMI with preferred settings
/usr/bin/retroarch -L /usr/lib/libretro/imame4all_libretro.so --config /recalbox/share/system/configs/retroarch/retroarchcustom.cfg /recalbox/share/roms/mame/tempest1.zip
SYSTEM_DIRECTORY: /recalbox/share/bios/
CONTENT_DIRECTORY: /recalbox/share/system/.config/retroarch/downloads
SAVE_DIRECTORY: /recalbox/share/saves/mame
MAME2000_SYS_DIRECTORY: /recalbox/share/bios//mame2000
MAME2000_SAVE_DIRECTORY: /recalbox/share/saves/mame/mame2000
loading 136002.113
loading 136002.114
loading 136002.115
loading 136002.116
loading 136002.117
loading 136002.118
loading 136002.119
loading 136002.120
loading 136002.121
loading 136002.122
loading 136002.123
loading 136002.124

@ian57 is there a list or a files that shows what emulators are active on P0/1 vs Pi2 vs Pi3?

noticed the following is missing (RPi Zero W version17.12.02)

/system/.lineapple/lineapple.conf (1 kb)
/system/.lineapple/Master.dsk (143 kb)
/roms/apple2
/roms/apple2/_lisezmoi.txt
/roms/apple2/_readme.txt

however adding these files does not fix the issue
More trouble shooting...

I just did a fresh install of recalbox on a RPi Zero W, and saw the same thing "Apple2 system to appear on the "front end". I noted that there was the "apple2" folder missing in "roms". I have a RPi3 that had pervious verion (maybe? Recalbox 17.11.02) that had the apple2 folder in it. it was upgraded to Recalbox 17.12.02, and the apple2 functionality still worked

I am going to try some suggestions on https://github.com/RetroPie/RetroPie-Setup/wiki/Apple-II

at a glance some of "linapple" are empty. but I need to compare "root" and "shared" folders between the RPi3 and RPi ZW