Hello again. I have been using Photoshop just fine since your last suggestion. Now I have had some technical service
from the Apple Store and I find once again that Photoshop won't stay open. I can open an image, but when I touch
the screen with a tool like the brush, Photoshop quits. I've checked the System Preferences that were suggested above,
and Photoshop is still listed as an app that can control the computer. Always some challenge, and I would appreciate
any further ideas you have.