Photoshop not Standard-App anymore?

Hey there,
since the latest update of Photoshop its gettin weird (OSX el Capitan).

I cant open PNG, JPG or even PSD with Photoshop on doubleclick anymore?!

Always Illustrator starts. Yes, i can change the Priority via ⌘+i but it wont save...
After reboot the Settings are broken again, and always Illustrator is the Standard.
I just deinstalled and installed them in various ways, but nothing works.

How i can solve this? Whats broken in my System?

Thx for Suggestions.