Organization logo shows up as broken link

Organization logo shows up as broken link

Hi... I have a valid image that is under 20K and when I try to add it from my local PC's HDD as my logo, I can drill down to the file, select it, save it, but it then displays as a broken image. The image was created in MS paint and saved both in JPG and PNG formats. I tried uploading each of those formats and it doesn't work. Is this a known issue? What is the work around?