Apple announced that all applications submitted to the iTunes App Store must work on both 2.2.1 and 3.0, in order to make it through the submission process. If you application doesn’t work on V3.0 it won’t go up for sale. It’s as black and white as that!!
However, you can’t create V2.2.1 versions in V3.0 Xcode, so you must install both versions onto your Mac!
It’s easier then you think!
When you install V3.0, you get the option of where to put the install files. By default, this will be in the Developer folder on your Mac Hard Drive. When you get to this stage on the pre-install menu, choose a custom folder that you can create on the drive in a different location of your choosing.
It’s as simple as that!
Don’t forget where you’ve decided to place it, as you will need to access that folder in order to run V3.0.
Happy coding!!
Cheers
Graham
