not excepting .nef

Got this to convert my hi def .nef pictures from my camera to a format like .jpg so I can post them to Facebook. The app description says it is capleble of what I want to do but it crashes every time I try to ingest my .nef files. Ill give it 5 stars as soon as the problem is fixed but for Ten dollars I am very displeased

Dkshendjs about Image Converter++