Every. Single. Time. Must uninstall the reinstall ADE

Every single time I want to download a book from the library, I have to uninstall ADE then reinstall it.  This started about 6 weeks ago.  When I open ADE there is nothing there.  I download what I want from the library, transfer it to my reader and close it.  When I reopen ADE there is nothing there.  Uninstall, reinstall, repeat.  You get the picture.  As far as I can see Adobe is USELESS at problem solving.  I have NO problem downloading the program, just getting it to work for me more than once.  I am BEYOND frustrated!  PLEEEEEEEEEEASE, someone, figure this out!