Hi Linda,

> I'm working on a Macbook Pro 5,1 , Intel Core 2 Duo,
> Mac OSx10.5.8 .

Yeah unfortunately it won't work on OSX version 10.5.x , it requires 10.6 or 10.7 - that's because Apple's current development tools (XCode 4) can only produce programs that work for 10.6 or higher, Apple's most current tools do not support making programs for 10.5 anymore.


> Maybe I should upgrade to a higher version? What do you suggest?

Upgrading to either OSX 10.6 (Snow Leopard) , or 10.7 (Lion) would work.

Either one is fine for MoI - I think that 10.7 has some more various changes in UI and stuff like that than 10.6 so it could be possible that 10.6 would be more comfortable. Since that's not the current version it might be more difficult to actually get it though, I'm not sure about that.

- Michael