These seem to be the critical lines - and would imply possibly a stuck pending.xml file
2012-12-21 08:15:01, Info CSI 00000036 Pending transaction content must be resolved, cannot begin another transaction yet
2012-12-21 08:15:01, Info CBS Failed to get transaction analysis because of pending operations. Disposition from Analyze: 0x1 [HRESULT = 0x80070bc9 - ERROR_FAIL_REBOOT_REQUIRED]
2012-12-21 08:15:01, Info CBS Failed to get inventory. [HRESULT = 0x80070bc9 - ERROR_FAIL_REBOOT_REQUIRED]
This can be caused by the TrustedInstaller service not running as Auto.
Please run the following commands and post the results....
SC QC TRUSTEDINSTALLER
SC QC BFE
SC QC BITS
(note for later - ignore at present! - fsutil resource setautoreset true C:\