Windows 7 64bit task sequence with HP 6570b.
SCCM 2012 Sp1
They hang just after the sccm client installation.
I verified we have the AD group ConfigMgr Remote Control Users
Our 32bit image seems to work fine.
From the smstslog
Waiting for CcmExec service to be fully operational TSManager 1/17/2013 3:36:50 PM 2988 (0x0BAC)
Succeeded loading resource DLL 'C:\WINDOWS\CCM\1033\TSRES.DLL' TSManager 1/17/2013 3:36:51 PM 2988 (0x0BAC)
Failed to create an instance of COM progress UI object. Error code 0x80070015 TSManager 1/17/2013 3:36:51 PM 2988 (0x0BAC)