Ok so I have tracked down a little more info on my problem reguarding EnumerateFonts(true) and retrieving a list of fonts installed on the system and thought I would just start a new post.
I ran into this post in the Flex bug system. It talks about a EnumerateFonts(true) problem showing up in Adobe AIR. But I seem to be running into a similar issue with Flash CS3 and AS3.
So at the moment, it apears that using EnumerateFonts(true); causes my app to not load on a lot of Macs.
Any ideas anyone? Thanks as always