Dan Kinney posted on the Station Community Forums : 

There will be a system maintenance that will be happening early, early tomorrow morning (California time).  This particular maintenance may cause some of the "endless processing" issue that we saw a couple of weeks ago.  There will be no update of the Station Launcher or any of the LaunchPads during this update.  It is back-end only.

After you play late into the night (and you know that you will be), log out or exit your Station Launcher.  If you are hit with this condition, you should be able to recover with a logout/login.

Of course, if you run into any problems, post a message to this forum and we'll try to help you through.

-dan

Dan and Colleen have been very responsive to user issues with the Beta Station Launcher.  We expect great things!