So I am on Installer 3.0 on my pre-Macworld 16GB 1.1.3 iPod touch. Every time I go to download something I get the error: ERROR: Main script execution failed! Every time I go to uninstall a program I get the same error. I tried to update installer before I started getting the errors and it said I needed 512MB on my disk, and I had well over 2GB of space left, and I was able to install other programs that were bigger than the installer update. Please help!