Adobe Air problem - Please assist?

4 days ago on start-up I had a message that update was required for Adobe Air so I let it install.  Yesterday I noted my websites were missing graphics, videos on You tube not playing etc,  so I restarted computer and had message on start up re ADOBE AIR saying "The installation of this application is damaged - Try reinstalling or contacting publisher for help".

As the latter is not an existing option as they say "no help with Air just look at forums for assistance"  this very non technical pensioner is asking for help as I have tried to do what I know by uninstalling and reinstalling THREE times now and still het the message and when I try to get into google it now tells me my profile cannot be used it belongs to a newer version - dont have a clue what I can do for this so any simple advice would be appreciated. 

To be honest I dont even know if putting this is the right place but nothing anywhere seems to relate to problems with Air.  If I should be asking elsewhere perhaps somebody could point me in that direction as would hate a major problem as because of disability my computer my lifeline.

Thank you.