" Sorry, an error has occured. Adobe AIR could not be installed. Install either Gnome Keyring or KDE KWallet before installing Adobe AIR."

gistfile1.txt

This can be fixed:
    Terminal, Ctrl+Alt+T - locate libgnome-keyring.so - (locate libgnome-keyring.so)
    This is my result (yours might be different):
    /usr/lib/x86_64-linux-gnu/libgnome-keyring.so.0
    /usr/lib/x86_64-linux-gnu/libgnome-keyring.so.0.2.0
    Create a symbolic link to your location strings that you found with the previous commands:
    sudo ln -s /usr/lib/x86_64-linux-gnu/libgnome-keyring.so.0 /usr/lib/libgnome-keyring.so.0
    sudo ln -s /usr/lib/x86_64-linux-gnu/libgnome-keyring.so.0.2.0 /usr/lib/libgnome-keyring.so.0.2.0
Use following commands for 32-bit systems:
sudo ln -s /usr/lib/i386-linux-gnu/libgnome-keyring.so.0 /usr/lib/libgnome-keyring.so.0
sudo ln -s /usr/lib/i386-linux-gnu/libgnome-keyring.so.0.2.0 /usr/lib/libgnome-keyring.so.0.2.0
    Then repeat step 4 & 6 not 5 as the permission to execute the folder has already been changed.
    Remove symbolic links after installation of Adobe AIR 2.6.0:
    sudo rm /usr/lib/libgnome-keyring.so.0
    sudo rm /usr/lib/libgnome-keyring.so.0.2.0