Added reference pictures are pink I've added new images into a blender file and they turn up pink. I haven't moved the file, which I understand can affect how Blender finds them. I have tried packing and all sorts of things, but the image doesn't show up in the first place, unlike other questions I've seen where they came back a day later. I have tried both .jpg and .png files and nothing seems to work. I've tried File > External Data > Report Missing Files and nothing comes up as missing.
These are the things to check - 


naming/paths - try to put the images in a path without gaps, or non-standard characters. First try something like C:\test.jpg, where nothing should go wrong. 
path of your blender file, same as above.  
image format - open the images in an image editor, resave them
if these don't work, it might be some kind of a bug, specific to your operating system.