Trouble Installing Adobe AIR on Mac OS X

I get the following error when trying to install Adobe AIR: "An error occurred while installing Adobe AIR.  Installation may not be allowed by your administrator.  Please contact your administrator." I am the administrator.

I followed the steps located in the Adobe help forum, but this has not worked either (I'm still getting the same error). Can anyone help?

This is what didn't work for me from the help forum:

http://kb2.adobe.com/cps/403/kb403150.html#main_determine

Problem: During installation of Adobe AIR, you receive an error dialog with contents similar to "An error occurred while installing Adobe AIR.  Installation may not be allowed by your administrator.  Please contact your administrator."

Follow these steps for the manual solution:

1. Using Finder, navigate to your Applications folder and look for a file (not a folder) named "Adobe".  If one exists, rename or delete it.
2. Open the Terminal application in your Applications/Utilities folder.  Run the following commands:

   sudo chmod -R ug=rwx,o=rx /Applications/Adobe
   sudo chmod -R ug=rwx,o=rx ~/Library/Application\ Support/Adobe/
   sudo chmod -R ug=rwx,o=rx ~/Library/Application\ Support/Adobe/AIR/
   sudo chmod -R ug=rwx,o=rx /Users/Shared/Library/Application\ Support/Adobe/

Next, adjust the ownership of a particular folder. Run the following two commands in Terminal, noting the user name response of the "whoami" command.  Replace username with your username in the next command:

1. whoami
2. sudo chown -R username:staff ~/Library/Application\ Support/Adobe/AIR/

Close the Terminal application and rerun the Adobe AIR  installer.