I just updated Sky Safari 6 Plus 6.02 Mac Ond the app icon is corrupted. It looks faded out mostly transparent. You see a corrupted bearly visible image which (OS10.12.6 iMac)show (I think) a red telescope.
Also, when you do an About Sky Safari 6 Plus, you get nothing back,
I have a small astronomy forum. I have been recommending Sky Safari 6 Plus Mac, b I'm starting to become concerned about this product.
I have the iPhone app as well and it's great.