Do you have a dual operating system; ie: OS 9 & OSX? If so then you probably have installed stuffit expander for os 9 but not for osx perhaps. Actually the OSX install disk for applications should have an osx version on it. Otherwise you can install the newer one from the link I gave you if you're using OS 10.3 or higher.
Which OSX version do you have? Sounds to me the Stuffit Expander version you have is only for OS 9.
I'm a little confused. Is it a program installer you're trying to open or the stuffit expander installer? It sounds like the version you have on your comp is not the osx version. |