I have CS6 installed and need to go to CC. However I can't seem to use the App Mgr as I always get this same dialog even after re-installing. I seem to remember for Illustrator CC they told me to turn off something to do with extensions, and I can't remember what that was.
Anyway, the last time I upgraded was over a year ago so please give me step by step directions for InDesign. As you might imagine, I am not often inside ID so it's not intuitive.