My WP site seems to have been working fine. I have been using FIlezilla to upload images and have a fair few on my site already. I was uploading a new image a couple of days ago, and it wouldn't upload, instead the thumbnail was a blue square with a white question mark in it. I looked at all my other media files and the existing images all had the same. I could only view them if I clicked into Edit Image.
I have viewed the permissions for the images and set them on 777 and still nothing.
They all seem to be in the correct folder in wp-content/uploads
I'm just very confused. Is there something that I could have possible done that would have screwed all of this up? I upgraded to the latest version of WP, but the problem was there before I did that.
Any help would be GREATLY appreciated!