I'd really suggest that you give up on using ConfigMgr for creating your Windows 10 reference image and start using MDT instead. Follow Johan's excellent guide below:
http://deploymentresearch.com/Research/Post/496/Building-a-Windows-10-Reference-Image-using-MDT-2013-Update-1
By doing this, you'll not have to import the install.wim from the Windows 10 ISO, and you'll not have your issue with taking a capture.
Simply put it, always use MDT for reference image creations