Task sequence reboots after applying drivers and doesn't continue

Hi All

I'm trying to implement USMT into a task sequence. Without USMT the task sequence deploys Windows 7 successfully with my personalised captured image.

Looking at smsts.log the drivers are installed then the setup requests a restart. After reboot the machine is joined to the domain and doesn't continue with TS. The _SMSTaskSequence directory still exists on the root of C:\ as opposed to being tidied up.

<![LOG[SMSTSRebootMessage=A new Microsoft Windows operating system is being installed. The computer must restart to continue.]LOG]!><time="03:09:08.466-480" date="04-16-2014" component="Reboot" context="" type="1" thread="1588" file="rebootcomputer.cpp:122">

Heres my smsts.log file https://dl.dropboxusercontent.com/u/23479177/smsts.log 

Any ideas?

Thanks in advance

Phil