Yes the preview file shows in the folder, I extracted Pixelator on the desktop and it showed the preview window but now the source image window went blank lol, but at least that's better
Lol strange, maybe it was permission issue? Regarding the new issue, I suspect that # in source path, can you try to remove it? UI is actually html and it's images with src pointing on the file, since # have a special meaning in URLs it might mess it up.