After uploading a single frame webP image and reloading the editor I experienced broken links in the Art Library. Before reloading I was able to place the art into the scene, afterward I was not. Images placed into the scene before reloading appear normally. To create the files I used the png to webP converter found on this webpage: <a href="https://developers.google.com/speed/webp/docs/using" rel="nofollow">https://developers.google.com/speed/webp/docs/using</a>