I'm having multiple issues with Photoshop CC. I just installed it yesterday and all went well. I began working on a project and discovered that the bracket keys no longer increased the brush size, but instead jumped from one brush to another. The following day I tried to open the app and got a blank white window and a spinning beach ball. It won't start. I have a screenshot below. Anyone else fix these issues?
Fixed it. This might be helpful to someone:
The dialogue box, ironically, turned out to be the "Help Improve Adobe's Products" participation option. It seems to have been a network issue with me where adobe just couldn't talk to it's server. I turned off my wifi and restarted Photoshop. The dialogue box came up again. I was able to make my selection and it went away. Photoshop started fine after that.
The bracket key issue seems to have been related to my Wacom tablet. I use an Intuos 5. In the Wacom system preferences, I deleted my pen preferences specific to my old version of CS6 and then unplugged the tablet and restarted Photoshop. All is fine now.