Lightroom Mobile crashes when I try and save image to camera roll at maximum available size.

I edited a RAW CR2 file in Lightroom CC Desktop on my Mac, saving the completed edit in the Adobe Cloud. I opened Lightroom Mobile on my iPhone and synced the cloud with that device. I opened the newly edited and synced photo and attempted to save to the local camera roll as I've done thousands of times before. I chose the maximum available size and watched as the Lightroom attempted to save the jpg image to my phone but crashed during rendering. I repeated this 5 times with the same result, a crash upon rendered and no file saved locally. What gives?