Acrobat DC starts, then quits after a couple of seconds
I have just subscribed to Acrobat DC, download and install was painless. I am running Windows 10.
I did not allow the installer to remove my previous version (Acrobat XI).
When I start the program, the start screen shows, but after 10 to 15 seconds it just quits no matter if I try to open a document or if I just let it sit idle and do nothing.
Does someone know how to get the program up and running? I'd appreciate your help very much.