Are you able to reproduce the same crash with e.g. creating a blank 5100x5100 image, doing a couple paint operations, and then saving? I wasn't able to reproduce it it my testing, so it might possibly be related to the actions you're performing before saving, or the source image being used.
Are you able to reproduce the same crash with e.g. creating a blank 5100x5100 image, doing a couple paint operations, and then saving? I wasn't able to reproduce it it my testing, so it might possibly be related to the actions you're performing before saving, or the source image being used.