I have an iMAC using OS X EL Capitan. About two weeks ago both my McAfee application and my Adobe Export application crashed. I have been able to fix the McAfee product but I can't get the Adobe product to even open. The PDF files I am trying to read are good because I can open them on my iPad pro. I tried the Adobe support site but found it useless. Any ideas? I tried to install the simple Acrobat Reader free program but it won't work. Says I already have a newer version installed I guess they mean Adobe Export PDF.