WP Easy Gallery Issues

Hi all.

I’ve been using the Easy Gallery app for a while now. But suddenly it’s started saying image file paths are incorrect or the image does not exist. Not sure if this is a problem with Easy Gallery or WordPress. I’m not doing anything different as far as I’m concerned. The images are in my media library and I can add them to the gallery. But the little thumbnail in the list of images when editing the gallery isn’t there. When I look at a live page, the main thumbnail is there but when I click on it I get the message saying ‘ check image path or image doesn’t exist.’

Any help would be great.