Never Given Option To Sign In To Mac App Store

Question

MBP i7, OS X 10.6.6 (obviously), never restored.
App Store will launch, I can browse, I can goto CREATE ACCOUNT, but clicking sign in from the menus and from the "purchases" tab does nothing (e.g. I click but not even an error message, nothing outputted to console, even).
Anyone else having issues? Have repaired permissions, rebooted, etc, etc. Feels like I'm using Windows .

Answer 1

Sure -
I didn't feel comfortable throwing instructions, if mis typed/done improperly may trash system files (like an improperly positioned asterisk, etc on some below commands could delete more than you should, etc, etc), so I figured it would self-select the people who could/should figure out from the high-level hints what to do from those that would probably be best NOT doing this.
You'd have to try REALLY hard or be incredibly unlucky to have something bad happen out of these sequence of commands, but hey, I'm continually amazed by Murphy's Law....
But who am I to decide who should and shouldn't be messing with their system, so at your own risk (e.g. I will be happy to help if this doesn't work/breaks something, but only have so much time to dedicate and may randomly disappear back to my work at any moment for any, even indefinite, periods of time)...so with that warning, it's actually pretty straightforward and innocent.
1. Download the official installer (do not use software update) - http://support.apple.com/kb/DL1343
2. Download UnPkg - http://github.com/downloads/timdoug/unpkg/unpkg-4.5.zip
3. Double click both files you've downloaded
4. Launch UnPkg
5. Drag the Installer on the Installer Disk Image that is now mounted onto the UnPkg window that says "drag files here" (something like that).
6. It will extract the contents of the update to your disk so you can pull the framework out of there manually and force copy it, apparently the bug is that Apple's installer may not copy it in some circumstances
7. Open a Finder window, goto Applications, goto the Utilities folder, and start Terminal
8. Type and press enter at the end (without the quotes) sudo rm -fr /System/Library/PrivateFrameworks/CommerceKit*
9. Enter your login password when prompted
10. type and press enter at the end (without the quotes) sudo cp -R ~/Desktop/MacOSXUpd10.6.6/System/Library/PrivateFrameworks/CommerceKit.framewor k /System/Library/PrivateFrameworks/
11. Quit App Store (it if is still open)
12. Open App Store, you should be able to login now.