What does x-apple-amd-action_message mean?

Same here. I can't open my email app either and when I take pix I don't see them in photo album!!!!! All after update

SSame here I can't download apps and I can't even log into my Apple ID in the App Store due to the new update

I Figured out how to fix this and it is actually pretty simple to do. First you go to the music app and in the top left corner there is an icon of a head looking thing, you click on that and then it will ask for your username and password and you can log in through there.

How do you download an app then

I Had this problem as well, first I signed it of my Apple ID, but it wouldn't allow me to log back in, so I just simply restarted my phone and now I can log in and download apps. Hope this helped!