Creating Web Installer for CI Based Application

just one opinion but i've had the experience so many times where an installer fails on some step, and then instead of trying out the application i'm trying to debug the installer. so if possible there should be an 'installer free' version of the app, with the relevant sql files to create the database tables, and basic instructions for filling out configs like server path, etc. also there are times when you want to check out an application before doing an install and creating a bunch of db tables etc.