Can't Install Xcode on OS X Snow Leopard

Question

I have tried 3.2.5, 3.2.6, 4.0.2, 4.2 etc and I get an install error immediately after providing credentials. I provide username, password. I am admin. Then I get The "Installation Failed" error:

An unknown installation error occurred. The installer encountered an error that caused the installation to fail. Contact the software manufacturer for assistance.

How can I find out what the problem is?

Solution

Install this: Apple Software Installer Update 1.0.

About Apple Software Installer Update 1.0: "This update addresses an issue that may prevent certain Apple software from installing. This update is recommended for all users running Mac OS X 10.6.8."

Comments

[Frederick Marcoux]

Do you have the last version of Snow Leopard?

[lupincho]

and did you install this: support.apple.com/kb/DL1512 (About Apple Software Installer Update 1.0. This update addresses an issue that may prevent certain Apple software from installing. This update is recommended for all users running Mac OS X 10.6.8.)

[sissi_luaty]

@lupincho You should make that an answer. It fixed the problem for me!

[lupincho]

@Pongus: I made that an answer; glad that it fixed your issue

[Sweta Sharma]

AAAAAR. So now I can finally install the thing that will let me install the thing that will let me install the thing that will let me install the thing that I actually need to install. .. I AM SHAVING A YAK.

[Iqbal Khan]

want to make thousands vote up. It saves my time because i had to give update to client.

[lupincho]

Yes, that's very weird issue. I don't use SL anymore, but saw that download when looking for something else and remembered it as it is something that I haven't seen before.