I think PATH should only contain folders, not the full path to your binary. But now I'm not sure if even that would help. It would be the best if you could join

I think PATH should only contain folders, not the full path to your binary. But now I'm not sure if even that would help. It would be the best if you could join #lispgames or #lisp on freenode so we can debug it in realtime. We might even find someone there who has more experience with cffi.