I recently bought a Macbook 2007 version with 2.0 Ghz and 1 GB Ram and it has the 80 GB HD. it came with Tiger 10.4 today i attempted to upgrade it to Leopard 10.5 I had cleaned the Leopard disk before putting it into the drive and I ran into a speech error message half way through the install so i restarted and when i restarted it didnt give me an option to go back to 10.4 it said 10.5 however when i go into it and click on any options it says your application quit so i'm attempting now to update the software by downloading the Mac OS update for 10.5. Will this cure my issue with the install stopping in the middle? I do not have the Tiger 10.4 disk so i dont know if i can even get back to that version.