The thing is, it is not the fact that these DNG files are unable to be opened, but could actually end up corrupting your entire library, resulting in you losing the entire photo collection, God forbid. There was a product advisory that was initially published over at Red Dot Forum, where Leica claimed how loading Monochrom DNG files will result in Apple Photos to “crash continuously on loading.”
“This may cause the Apple Photos library to be destroyed. This means that pictures previously taken with any other camera will be lost,” Leica writes. “As such, Leica Camera does not recommend using the Apple ‘Photos’ App for DNG files from the new Monochrom (Typ 246) until further notice.”
Leica is no doubt cooperating alongside Apple to put a stop to this issue, and the fix should, in all probability, be on Apple’s end since Leica did mention how the next software update for Apple Photos ought to be bug-free – at least for this particular bug.