I had to boot from the Mac OS X Installation CD. Change the root password. Restart Mac OS X. Log in as root with the new root password. Then I was able to successfully install the Developer Tools.
I still can't get it to completely install.
However, I read some posts on Apple's discussion board. I have managed to get almost completely installed. I found that you must log in as root. Simply having administrative rights isn't enough. Apple's documentation doesn't say anything about...
You should log in as root to install Developer.pkg. Don't just enter an administrator password. The installation will proceed to 1/2 way and simply stop. The dialog will remain, but the software will never completely install.
If you log in as root, it'll almost completely finish the...
Installed the RC over PB last week without problems. I had never installed the Developer Tools in PB but need to install the RC Developer Tools now.
The installer reaches approximately 1/2 way, states that there are 9 minutes remaining but never completes. I let it run overnight and this...
http://www.macosrumors.com had posted that there may be such an update in November. It's fallen off of their root page but you can search throught recent updates...