Here's what I got - apologies for any formatting peculiarities.
The problem: 10.6.6 mac won't boot after time machine restore to disk.
Further symptoms: Booting with Command-v shows several errors: usually blued and loginwindow collapse with errors from launchd. Errors will be of the style "dyld: Symbol not found:
CSSMOID_APPLE_TP_MACAPPSTORERECEIPT" and other CommerceKit / CommerceCore framework errors.
A solution: Your Framework Security library may be an older version (possible cause with Time Machine below). The easiest way to fix this is to find another, working 10.6.6 Mac, and update the Security library on the broken machine.
Identifying if you're affected:
1) Boot the broken machine into "target" mode - hold "Command-t" during boot until the [Firewire|http://itunesu.utah.edu/terms/images/Firewire_Icon.png] icon appears.
2) Connect the broken machine to the working 10.6.6 machine with a firewire cable.
3) On the working machine, the disk of the broken machine should mount.
4) Open Terminal
5) Run "ls /Volumes" - the name of disk you mounted should be there (in this example, we'll use "Macintosh HD".)
6) Typing in the path of the
broken machine, run:
<pre>
nm /Volumes/Macintosh HD/System/Library/Frameworks/Security.framework/Versions/A/Security | grep random_fd | cut -d. -f2
</pre>
(this does a dump of the library, looking for the version value)
If this comes back with the value 22457 (or less?), your Mac is not booting because it does not have the updated version of the Security library, which is required in 10.6.6 since Snow Leopard added the Appstore / Commerce framework.
Fixing if you're affected:
1) First, make sure the working 10.6.6 Mac has a correct version of the framework:
<pre>
nm /System/Library/Frameworks/Security.framework/Versions/A/Security | grep random_fd | cut -d. -f2
</pre>
For 10.6.6, this should be at least "22458"
2) *Be extremely careful at this point* - Make sure on the
mounted disk (not the machine you are working on!) run the following
<pre></pre>
2a) Make a backup of the broken library
<pre>
mkdir /Volumes/Macintosh HD/savedLibrary
cp /Volumes/Macintosh HD/System/Library/Frameworks/Security.framework/Versions/A/Security /Volumes/Macintosh HD/savedLibrary
</pre>
2b) Copy the working version over the non-working version:
<pre>
cp /System/Library/Frameworks/Security.framework/Versions/A/Security /Volumes/Macintosh HD/System/Library/Frameworks/Security.framework/Versions/A/Security
</pre>
3) Eject the mounted disk from the working Mac, disconnect the firewire cable, and reboot the "broken" Mac. It should come up.
If it doesn't, you have problem(s) that are probably outside the scope of this. I'd also suggest restoring your original security library that you saved off.
Suspected cause:
It appears that Time Machine never recorded the change to the Security library after the update. If the library hadn't changed, the machine should have failed to boot like it did after restore the moment a 10.6.6 update was applied.
Inspecting the contents of my Time Machine backups before and after updating shows that Time Machine never updated the Security Framework library - why is still not 100% determined, but restoring from it is definitely broken. Combing through the backup databases on my Time Machine disk:
(I upgraded to 10.6.6 on January 6)
<pre>
for name in 2010-12-30-093337 2011*
do
echo -n "In backup on ${name}, version of Security library is: "
nm "${name}/Macintosh HD/System/Library/Frameworks/Security.framework/Versions/A/Security" | grep random_fd | cut -d. -f2
done
</pre>
In backup on 2010-12-30-093337, version of Security library is: 22457
In backup on 2011-01-04-100707, version of Security library is: 22457
In backup on 2011-01-05-082402, version of Security library is: 22457
In backup on 2011-01-06-092846, version of Security library is: 22457
In backup on 2011-01-07-094827, version of Security library is: 22457
In backup on 2011-01-10-093559, version of Security library is: 22457
In backup on 2011-01-11-110542, version of Security library is: 22457
In backup on 2011-01-12-094137, version of Security library is: 22457
In backup on 2011-01-13-103238, version of Security library is: 22457
In backup on 2011-01-14-113145, version of Security library is: 22457
In backup on 2011-01-18-112856, version of Security library is: 22457
In backup on 2011-01-20-114953, version of Security library is: 22457
In backup on 2011-01-21-103642, version of Security library is: 22457
In backup on 2011-01-24-102321, version of Security library is: 22457
In backup on 2011-01-27-002508, version of Security library is: 22457
In backup on 2011-01-27-011931, version of Security library is: 22457
In backup on 2011-01-27-104406, version of Security library is: 22457
In backup on 2011-01-27-114322, version of Security library is: 22457
In backup on 2011-01-27-123928, version of Security library is: 22457
In backup on 2011-01-27-134523, version of Security library is: 22457
