I wrote:
In particular - there could be significant differences between Leopard and Tiger...
Duncan Coutts wrote:
Tiger == OS 10.4 Leopard == OS 10.5 So the one built on 10.5 did not work with 10.4, but presumably an installer built on the older version will work on the newer version.
No, they are just incompatible. There are knotty differences between the C library structures on the two platforms. And there are differences in the installation paths. I suppose you also have to watch out for PPC vs. Intel. I can't say exactly what all those differences are though. You can download an environment that lets a developer working on Leopard set up installation packages for Tiger. But Manuel told me that he was unable to use it, because he couldn't re-use his work on the Leopard installer there. He would have to start from scratch. -Yitz