The message "You must uninstall the tryout before installing the full product." appears while opening Adobe Premiere Pro 2.0 application. If you continue to use the tryout version, you must uninstall the tryout by clicking the Start Menu and then choose Programs, select Add or Remove Programs icon and then choose Adobe Premiere Pro 2.0 menu. Select 'Change/Remove' button to uninstall if you want to use this tryout version.