There's no error message. I've gone through the whole process of downloading it, and all seems to be well. It seems as though it's successful, but there's no icon on the bar at the bottom. Also, when I click on the Adobe icon on the download box, it just wants me to go through the whole thing again. I can't access files from any website using it.
You'll only see programs in the bar at the bottom (the "dock") if they are already running, or if you choose to add them. For everything else, you need to have the habit if looking in the Applications folder.
Make sure you have right version for the MacBookAir which is Intel. There are some universal binary (which can run either PPC & Intel) versions of Adobe Reader I think they are version s 8 & 9. Don't copy the version from the desktop Mac since it could be PPC which may not work correctly on the MacBookAir.
It is best for you to get the correct version of Adobe Reader is go to http://get.adobe.com/reader/?promoid=BUIGO and the website should be able to determine the correct version of Adobe Reader that could work on your system. Once you download it on your system then install it.
Nothing was working, so I made an appointment at the Genius Bar. They quickly found that Safari wasn't correctly communicating with Adobe and fixed the problem. Hurray! Thanks to eveyone here who helped too.