I've purchased an M42 lens adapter for my NX10 body. It fits perfectly (as does the M42 F2 30mm lens), yet in M, S, A (etc) modes, I am unable to save an image. It seems that no matter what I try, the 'no lens' warning appears and prevents me from recording an image. the lens manually-focusses perfectly, and the manual iso/shutter settings seem fine (to me..)... am I missing something stupid?!