It seems the trouble isn't the images index number!
But I think when we want rebuild all images with RT Se7en Lite unfortunatly, isn't possible because there are not the same architecture inside the images: x86 and x64!
The reason is there are two versions for RT Se7en Lite: one for Windows 7 x86 and another for Windows 7 x64!
It's needed also to change the Autounattend.xml file for Windows 7 AIO.
We can ask a request to Benjamin to add this feature if it's possible for the next release to customize an Windows 7 AIO.
*Edit: If you have successfully trimmed the two images install.wim, you can try to mount the install.wim and see if your images are customized!
This post has been edited by myselfidem: 02 April 2011 - 01:32 AM