I searched the registry for SingleImageWW.msi figuring it's being told to look for that file from there. First thing it found was within a key called: 00004109D30000000100000000F01FEC in HKEY_CLASSES_ROOT\Installer\Products. Also found it here: HKEY_LOCAL_MACHINE\SOFTWARE\Classes\Installer\Products\
I searched the registry for that key and there are several locations pointing to it. I renamed that key under classes_root and added _old to the end of it. (Doesn't matter what you add, just works as a flag for me.) It renamed the same key under HKLM\Software\Classes\Installer\Products
automatically (linked, I guess) Searched the registry further for SingleImageWW.msi. No where else to be found.
Re-ran the SP2 installer. Went right through. Did not take very long at all. Checked my office version in Word and it tells me I'm at 14.0.7106.5003. I believe it went so quickly because most of the files were already updated, it just needed to validate
the install and could not without finding SingleImageWW.msi.
Let me add, I used the installer file for SP2. I did not use windows update to go through this troubleshooting. After running through the install successfully, Windows Update had it cached in there still waiting to install SP2. I let it run through and WU
said it installed successfully. Checked for updates again, More office 2010 updates were ready to come in. Well, just one. Office 2010 File Validation. Oh great.... Thought that was going to cause an issue. Nope, installed just fine as well...
Checked for updates again. ****... Office 2010 File Validation... and Office 2010 SP2 is in the list but unchecked. OK let's reboot. *facepalm* Microsoft Motto: When I doubt, Reboot! Still shows up in the list, figured I would turn off Microsoft Update and
just use Windows Update. Well... Now I can't figure out how to turn Microsoft Update back on and I'm too tired to go any further.
Would someone want to try renaming that registry key and trying the install from Windows update instead?