Yesterday I recorded a show in M/S mode (located on the FOH, attached to camcorder's shoe mount) but still can't figure it out how to decode it properly....
I've tried everything I can think of to make that work using an array of effects related to MS etc, and failed. You pictured MSED settings are correct. But there's something amiss with the original recording. Step one, IMHO, is to set up the device at home, record in MS, and simply walk round it centre, left and right, and for that matter, back. Then see whether that decodes correctly (in other words, you should hear the correct placement). If that also doesn't work, there would appear to be something wrong with it.