Try downloading a lower version of photoshop and see what that does.
I need help with my CS5. I've been getting an error with opening .png files like renders. So I uninstalled it completely, then i Reinstalled it. And now i have the problem where i put in the Seriel Key and then it says We are unable to start your subscription for Adobe Photoshop CS5.1 Extended Subscription Edition.
Can anyone help me with this problem please?