Installing and Upgrading
when installing with the install and upgrade add-on you will have to chmod all folders that are used by any add-on like so
install
install/data
library (and the add-on you are trying to install)
qmaster ( and all folders inside this )
styles ( and all folders inside this )
chmod these to 777 then use the install and upgrade add-on it will install fine as i have tested this.
so even if you install a different add-on that can be installed by the install and upgrade add-on you will get errors till all folders for that add-on are chmod to 777