I have no clue if this is an xcode package problem or a problem with the DMG but here goes. A few days ago I got this perfect condition powerbook rev D G4. The system is flawless and runs smoothly. I wanted a video editor that I knew and come to find out kdenlive is available in macports I decided I wanted to install MP. Problem for me is xcode. 3.0 to be exact. I download the DMG and try to mount it but when I do it says "No mountable file system". Other DMG's are fine and intel DMG's open just fine so it has nothing to do with that. I'm not sure how to fix this as I am a newb to the mac world but I have found it fascinating to learn about and look forward to getting a mac in the future. Thx for the help!