Update 14-11-2013: This is not a bug. Read this onhttp://technet.microsoft.com/en-us/library/jj591552.aspx:
The build and capture task sequence was updated to apply an operating system image instead of running Setup.exe for installation. You can still run Setup.exe for Windows 8 deployments by editing the task sequence in the task sequence editor.
The problem is: if you add the source files from a Windows 7 setup DVD into SCCM you can’t use them because a bug in the wizard. If you make a Build and Capture Task sequence and browse to the Operating System installer package, there is no package.
In the screenshot you will see a folder called Root. This folder Root is the root of operating System Images. See for your self. I have a Windows 7 folder beneath the Root folder in Operating System installers. The Operting System Images is empty, so also no folders.
This is the view if I want to add the installer in the task seqeunce.
I don’t see the Windows 7 folder? Strange, but this is the “root” of Operating System Images.
You have to add the install.wim file from the source files directory of the Windows 7 setup DVD (folder). Follow the wizard to add the image.
After the wizard, go to Task sequence to make a Build and Capture Task.
Select Build and Capture. Select the added image and finish the wizard. Don’t use Join a domain, because we are using this task seqeunce to build a new image.
Edit the created Task Sequence. Highlight Apply Operating System.See right for the radio button Apply Operating System from an Original installation source. Browse to the installer (now you will see the installer package).
After that click on Apply and close the screen.
It’s now ready for build and capture.