Adobe don't support mixing Reader and Acrobat from different versions. So Reader 10 with Pro 10 would be OK, or Reader DC and Pro DC.
Can't you start Pro and use File > Open in the usual way?
You should be able to uninstall Reader. What exactly happens when you try?
Right the different versions aren't compatible. However, from what I can see, Pro DC is only available as a monthly charge. Since I've already paid for Pro 10.0, I don't see a reason to have to pay again over and over for something I have been using for a couple years. I'd love to get back to Reader X or XI or whatever I had, but all the threads that I have seen make it sound like it's nearly impossible to get rid of DC. I have a workaround to edit .pdf files in Pro, but it would be nice if I could open them in Pro as the default like I have been doing since I bought Pro.
Some people seem to have problems uninstalling Reader DC, but mostly it just uninstalls in the usual way. Have you tried? What happened? (After uninstalling Reader DC, a Repair of Acrobat X may be needed).
Sorry, I usually do quite a bit of research before I mess with things. Everything I could find led me to believe that it was hard to uninstall Reader DC. I searched everything in the folder and program for something that referred to an uninstall and found nothing. Thank you for jogging my memory and leading me to the Control Panel for uninstalling programs. It worked without a problem. Pdf files now open in Acrobat Pro. Thanks again.