Just a heads up to everyone. As many of you may know, Beta 3 was pushed out yesterday. The build is ZSK3 for both carrier and unlocked devices. The original post of this thread has been updated accordingly.
Here is the changelog:
I had the same Issue with not being able to download after registering..here is the fix. Go to the settings, apps, go to Sensing Members, Storage-clear data and cache. Then go back into the app and register again. It should work that second time.