It could be the image is too large. There is a limit. So perhaps copying it and making it smaller. Or you can create a simple web site just to host pictures and link it. I do this for some pictures. I use Weebly.com, it's pretty simple and it's free.
And make sure it's a proper format. Just randomly adding .jpg or .png isn't really the wisest way to go. Chances are the format was neither to begin with, for perl, and that's why she had to change it. There is, otherwise, no need to have to manually add it.
Or you could ask in the User2User Tech Forums if nothing here helps you, as that is the place to ask such questions here.