I got that when I was doing a fresh install on my wifes laptop the other day. It was with an older windows 7 ISO that had worked previously. In frustration, I gave up trying to use that installer and I ended up using the ISO (professional) posted in this post, and deleted the ei.cfg so I can choose the edition on installation (home premium).
Windows 7 Lite 32 Bit HTPC Edition
Thanks. Actually the patcher could accept blindly all N variants:windows.microsoft.com/en-us/windows7/products/what-is-windows-7-n-editionLet me know if you need a tester or some data from Windows 7 Professional N registry. 076b4e4f54