Thanks Tod.
This was a really dumb mistake though, and I should be careful to not only test the plugin before releasing, but also ensuring that the release process itself has gone as expected, as that it what messed things up this time.
Things have been fixed now, and a redownload or update of the plugin will fix all those broken sites. While I am really extremely sorry for the issues and stress this mistake will have caused, I do appreciate your note of positivity here.