Build 6154
Thread needs solution
Finally, I was able to install with out much problems. And then I discovered that during Partition Backup, my Office 2010 complained that it can not determine if the copy is valid and to use something in Control panel to repair. The moment that the ATIH finished backing up, the error went away and I was able to use my Office 2010. And no, I was not backing anything that was in use or I was not writing to a drive/partition that was in use.
I tried to replicate this problem by repeating the backup, but no problem the second time. If anyone finds this problem, post reply here.