I lost my cable release which I had used on my M10 since I got the body about two years ago. So I bought a new one (A Leica one) in the Leica Store in Mayfair, London. It worked for the first day, then stopped working. It's odd because you wouldn't think anything could go wrong with something so mechanical and simple. But it has. When I press the shutter release at the end of the cable, the prong at the other end does not stick out (the action what would normally trigger the shutter). I can't see anywhere to screw it tighter etc.
All idea welcome as I can't easily get back to the store to return it.