...from mdt 2012.
Highlights from the SMSTS log:
The execution of the group (Install) has failed and the execution has been aborted. An action failed.Operation aborted (Error: 80004004; Source: Windows) TSManager 9/6/2012 12:59:13 PM 1304 (0x0518)
Failed to run the last action: Install Operating System. Execution of task sequence failed.
Unknown error (Error: 000015F0; Source: Unknown) TSManager 9/6/2012 12:59:13 PM 1304 (0x0518)
Task Sequence Engine failed! Code: enExecutionFail TSManager 9/6/2012 12:59:13 PM 1304 (0x0518)
Error Task Sequence Manager failed to execute task sequence. Code 0x80004005
Also.. FAILURE 5616 : Verify BCDBootEx