I upgraded to IOS 11.0.2 last week. I used SkySafari a couple of times and it seemed ok. Last night the star map display started to rotate very fast and continuously ( I suspect I pressed one of the menu button down the bottom by mistake - not sure which one ) I pressed a number of buttons down the bottom to try to stop it. Almost immediately, a message flashed up ( something about some feature or other not being available or turned off - not sure if this is related ) and SkySafari crashed. Now, as soon as I start SkySafari, it loads, I get a flash of the SkySafari screen and then it crashes.
Is this a known problem?
I tried re-installing but it did not fix the problem ( I assume that the configuration file was retained in iCloud and reused when SkySafari was re-installed - so maybe that is why it continues to crash immediately ).
Given that the screen was rotating - could it be a problem related to the compass?
If I can figure out a way to stop iCloud doing anything ( I never asked it to ! ) I will try again to re-install and see if it fixes the problem.