All, We have reports from some users that they are unable to get the new macOS CouchDB 2.1.0 binary to start correctly.
With the help of a user, we have two workarounds you can use to fix the problem. They are documented here: https://github.com/apache/couchdb/issues/739#issuecomment-321404864 We have a delay in uploading a fixed macOS binary for about two weeks. Until then, please use either of these two workarounds to get the current binary running correctly if you have problems. All the best, Joan