There is an unfortunate error that slipped into Tweetings for Mac 2.1.0 update which can cause timelines to be empty for ‘some’ users. If Tweetings is downloading new Tweets as normal you do not need to do anything We have submitted an urgent update request to Apple but you can fix this yourself if you are familiar with OS X Terminal. On your Mac go to Applications -> Utilities -> Terminal From Terminal type the following...