I can upload BNP files, not JPG or PNG. I set PNG as a file type for search.
I set security low for the local intranet and trusted sites settings in Internet Explorer.
I used the paint program to change the PNG file to a BNP file and that worked, but I need to keep it as a PNG file. File size has been as small as 24 kb. The PNG file comes up fine in Windows Photo Viewer.