This is one of them Killer Applications for System Administrators. It has saved me many hours of painful troubleshooting after errors or conflicts caused by inferior installation software. At the touch of a button, Installer Observer snapshots your System Folder (or entire harddisk for that matter) in seconds. After running the installer, comparison with the Saved System State tells you what got installed where, which files have changed and which files have been deleted. If running the uninstaller doesn't solve your problems, and you forgot to backup your System Folder before you ran the installer, this neat little util will help you out every time! Keep up the good work, Zachary!