I have the same problem. This is the output when I try to launch the Amiga Emulator:
==============================================
/opt/retropie/emulators/uae4rpi /
rm: cannot remove `df0.adf’: No such file or directory
ln: failed to create symbolic link `df0.adf’: Permission denied
Unable to init SDL: Unable to open a console terminal
/
==============================================
There is another thing that makes me think that there is a problem of misconfiguration of this emulator: there are some folders and files named after uae4rpi and others named after uae4all…
coned: At /home/pi/RetroPie/ im have only the both Folders: Bios and rome.
The same for me. I was trying to set up the xbox 36O controller while I receive the arcade stick and buttons following this guide
http://www.retrobuiltgames.com/porta-pi-arcade-help/xbox360-controller-support/
but I can’t continue as I don’t have ./RetroPie/emulators/RetroArch/installdir/bin/
Greetings
