Installation conflict

I online purchased/paid for reader so that I could export PDFs. Downloaded and tried to install. It came into conflict with Cute PDF, which was already on my computer, and said to close Cute PDF. Cute PDF was not open. Would not complete installation because it was "open". Now I cannot open any pdfs with either program. When I try to open document with adobe it says "There is a problem with Adobe Acrobat Reader. If it is running please exit and try again. (1:1)" Tried to reinstall adobe reader but it is installed. Tried to uninstall adobe reader and it says "uninstalled with errors" and appears to still be installed because when I tried to reinstall it said it was already installed. When I try to open document with adobe it says "There is a problem with Adobe Acrobat Reader. If it is running please exit and try again. (1:1) I tried to make it my default application, but it spins forever. Customer support says to try the users. Any ideas? Thank you.