I try my first steps on creating a plugin, but even the template make-it-red.xpi fails to install. I always get this "bla ...seams not compatible" message. I tried with (in?-) official Debain zotero built 7.0.15 and with the today available tarball, says 7.0.15, too.
I can install better-bibTex.xpi, though. Is there some config I need to enable for WEBextension based plugins (better-bibTex seams old school)? Or any other suggestions?