Hi. I have a Powerbook G4 with 10.4.10 installed that I bought from a friend who upgraded. Since I've gotten it, I have not been able to mount any dmg files. Everytime I get errors that say "mounting failure" and "device not configured". Everything was working perfectly before switching the users. I have tried repairing permissions and the disk and deleting cache/ kernals, but so far nothing has worked. I would do a clean install, but I only have the disk for 10.4, and would thus lose the current operating system. I am in Istanbul and there is no Apple support here and very, very few Mac owners. I've also looked online for another program to open dmg files, but these programs are all in dmg format, which of course I can't open. Stuffit is also not working. It says it is missing the Stuffit Engine. I have recently added Unarchiver to open other formats, however. Can anyone help me, PLEASE?