AS7.1 snapshots have had problems the last week or so.
One being AS7.1 not able to handle spaces - that got fixed today afaik
Another about AS7.1 failing on -logmodule. That got fixed a few days ago.
My last downloaded AS7.1 snapshot works fine for me on OSX so would be good to hear which exact build version of AS7.1 you are tryingout ?