coreldraw X6 (64-bit) load time long but once loaded then freezes

I have had CorelDRAW X6 for about 6-months with no problems.  Recently I try to open X6 and the load time is extremly long.  Once it finally loads the screen looks normal but when I click on anything on the screen i just get a "ding" sound and the screen is frozen.  I actually have to go to task manager to shut it off.

Once in a while I can open a previous design and then everything will work fine. I thought I would try to re-install the software. I tried to uninstall but when I get to the uninstall page I see three options "Modify", "Repair", or "Remove".  I can click on these but there is not other botton on the page like and OK or Continue, so I am stuck.

This software is very important to my t-shirt design business. Any suggestions how to either get it to load normally and act normal or at least be able to uninstall and re-install?