It will be a crazy naming issue.
Try renaming to kick13.rom, kick31.rom etc etc.
Plus at the moment it will ignore other kickstarts added.
You can only use kick1.3 from A500 configs, kick3.1 for A1200 configs, kick3.1CD32 + CD32 Ext and kick1.3CDTV + TV Ext.
That will change as more configs become available.
When selecting A500, A1200, CD32 or CDTV, it will auto select correct rom/s. If they are not found it will fall back to AROS rom.