Sorry, an error has occured. An error occured while installing Adobe AIR. Installation may not be allowed by your administrator. Please contact your administrator.
Apparently, I have several dependencies to install. So here are the steps to make it work.
1. Issue the following commands.
su -c "yum install gtk2-devel rpm-devel"
(Its very similar to Ubuntu (if you have used one), that every AIR app you install will have a .deb equivalent, in this case a .rpm.)
2. Download Adobe AIR.
Download Link
3. Install it by issuing the following commands.
chmod +x AdobeAIRInstaller.bin su -c "./AdobeAIRInstaller.bin"
4. Now AIR is installed, but mostly will not be able to install via its Adobe AIR Application Installer UI or give you an "Error #5100"; install apps via its terminal command.
Adobe\ AIR\ Application\ Installer /media/Shared/Downloads/twhirl-0.9.2.air
(be sure to explore to the apps directory, rather than changing to its directory)
Now you should have a successfull Adobe AIR installation!
Credit goes to, Dustin Patterson, I just made it simplier. =)