HI, I am having OSX 10.4.11 version. I developed an application using Cocoa framework and Obj C. Then created a dmg file and distributing it. When I install dmg on 10.4.11 version, it is working fine. But the same is not true with 10.4.10 version........ is this because of backward in-compatibility issue ? or any specific reason? Note: All the above said machines have intel processors.