images not uploading

Not sure if it’s pro-sites for market press, but for some reason, the child sites are having a problem uploading images…

When you go to media, add new, it lets you browse the file, then upload it, and when it comes up, instead of showing the thumbnail of the image is shows the blue question mark like it can’t find it. Then if you click edit, you can see the image, but when you save it stays at the ? and the images don’t show up in the site..

images are working fine in the main site,