If you're or players on your server also experiencing the issue where your images keep disappearing after a game and/or server restart, use the new, modified plugin version. With this version, images are no longer saved in the RUST cache or have to be downloaded from the internet every time, because it now saves the images you create in a folder in the serverfolder under /Data (FolderName "SignArtistImages)". This way, nothing needs to be downloaded again, and the images are always available immediately after every game or server restart :) Why hasn’t the original plugin developer come up with something simple like this, given that images have been constantly disappearing for years? ;)
Download here ... https://www.file-upload.net/download-15609942/SignArtist.cs.html