Xcode 4.1 fails to install on my Snow Leopard Mac OS X 10.6.3

I recently downlo开发者_如何学编程aded Xcode 4.1 to install on Snow Leopard Mac OS X 10.6.3, however it fails to install. When I clicked to install the package, it gives me a "com.apple.installer.pagecontroller error-1" and says it fails to install. Does anyone know why this might be the problem? Thanks in advance!! (I have paid the $99 and joined Apple development).

Original answer:

Xcode 4.1 is for Lion only, and won't run on Snow Leopard.

For Snow Leopard, you'll have to use Xcode 4.0.2 instead. (Or upgrade to Lion.)

Update after helpful comment by @gcamp:

• Xcode 4.1 for Lion was released Jul 20, 2011.
• Xcode 4.1 for Snow Leopard was released Aug 29, 2011.

How did you download 4.1? The version currently available in the App Store lists "Mac OS X 10.7 or later" as a requirement, so it's the Lion-only version. To get the Snow Leopard version, you have to download it directly from iOS Dev Center.

Xcode 4.1 requires 10.6.7, as stated in the read me.

You just need to update your Mac (and make sure you have the right version of Xcode 4.1).

X-Code 4 requires Snow Leopard Mac OS X 10.6.7 or Later...Please check the read me file in Apple website..hope this helps you..

Looks like you may have a corrupted installation file. Have you tried redownloading it? I know it's a rather large download, but it's likely it was corrupted along it's journey.

Before trying a complete re-download of the installer, try rebooting your computer to see if that helps.