I've Googled the trouble-shooting procedures, but none of them seem to work.
I'm guessing that the reason this is is because my version of Photoshop, CC 2017, could still be a 32-bit app and needs to be upgraded to a 64-bit app? If I'm wrong about this, I apologize-this is all rather new to me, and I've not had any problems up until now. I have the duo package of Photoshop and Lightroom-and while Lightroom functions and I can open it-Photoshop doesn't seem to want to. I've recently installed the latest iOS update and once it finished I noticed that the Photoshop program doesn't want to open. I'd been receiving messages the past couple of months that my Adobe CC needed to be upgraded to function properly with the updates on my Mac.