Amiberry - Could not load system ROM, trying system ROM replacement.

[bizt]

Hi, I've installed the binary Amiberry. I think I have the Kickstarter setup correctly:

$ cd ~/RetroPie/BIOS/
$ ls -la
total 1068
...
lrwxrwxrwx 1 pi pi     49 Jun 17 16:54 kick40068.A1200 -> Kickstart-v3.1-rev-40.68-1993-Commodore-A1200.rom

However, for all the roms I'm trying to load I just get a blank screen. If I check the logs, I see the following for each:

Parameters:
Executing: /opt/retropie/emulators/amiberry/amiberry.sh auto "/home/pi/RetroPie/roms/amiga/SWOS 2021v1.1 - Disk1 [SensibleSoccer.de].adf"
Unsupported archive: /home/pi/RetroPie/roms/amiga/SWOS 2021v1.1 - Disk1 [SensibleSoccer.de].adf
Could not load system ROM, trying system ROM replacement.

I'm not really sure what's missing. It's happening for all Amiga roms so can't just be this game. I'm wondering if these games however are A500/A600, would that not run on A1200 .. I owned an A600 in the past (and in my teenage ignorance knew nothing about Amigas other than to play games) so not sure how backward compatible games were then. Might that be an issue? Should I be using another Kickstarter/emulator combo? Thanks