I installed TIFF fix from installer, and was not sure about what it's purpose. After installtion, it asked me to go to http://jailbreakme.com . I have jaibraked already using eralier method, that's why I've installer.app. So I decided to un-install the TIFF fix from installer. Now later when I tried to install it, it put the messeage that script couln't be run. Is it a bug? If so, it should be fixed. If not, it shouldn't be included in the uninstall section of the installer, because if it is in unstall section, then it means you can un-install it without any further problem.