Problem with updating TeamViewer

I have TeamViewer 12 installed in Xp Pro. When I opened it I was offered the latest version 14. Version 14 was installed over version 12. Towards the end of installation I received a 'Runtime error' message. Please see attachment. This message appeared a number of times even after I clicked the OK button. I can see version 14 in Program Files. but it does not open. I get the notification window with the message "TeamViewer.exe has encountered a problem and needs to close. We are sorry for the inconvenience". Even though it says "needs to close", actually it does not open at all