raise an error if the root element is wrong
raise an error if the root element is wrong

Change-Id: I5f77ac85d6327697934cdc78d5354c6814adb6c8
Reviewed-by: Karsten Heimrich <81d67632fe4bf9afb88a400b41aa25e19a1d2a12@digia.com>

olear/qtifw,olear/qtifw,olear/qtifw,olear/qtifw