frosty45 wrote: "I realize as I'm typing this that this is really dumb, but it's a 1x1 pixel black dot that I use to underline text (I could be using drawline I guess). I can't recreate the error on my end so I've just requested Apple to allow to submit a new build as it might just be an issue with the build itself."
Some frameworks may have trouble with a 1X1 image, perhaps with particular formatting/palettes. If you continue to run into the problem, I'd suggest making it an 8X8 or 16X16 and make sure to match the color depth with the other PNG's you are loading.
I would suggest case as well, except that issue would likely manifest on the other platforms that it's already working on. So I'd suggest focusing in on possible compatibility issues with the image file itself and whatever display configuration they are trying to run it on.