Adobe application manager no longer opens.

I've seen lots of posts about how peoples manager stopped working but when I read the post its about how it wont download. My is down loaded and has worked fine up till a month ago. Now I get icons on my PC that says I have updates and to launch my application manger but it wont open. I tried to uninstall and download again but my PC says I first have to close my desktop application manger. If I could open it I wouldn't need to remove it and try again.