Ubuntu 8.04 or greater does not have /usr/share/cups/model directory where our driver create a ppd file.

Follow the instruction below when the installation failed with the message.

(Superuse authorization will be required)

1. Uninstall the cupswrapper driver.
   Command : dpkg -P (driver name)
2. Create /usr/share/cups/model directory.
   Command : mkdir /usr/share/cups/model
3. Install the cupswrapper driver.
   Command : dpkg -i --force-all (driver file name)