@LJedi First thing is to update to the latest, on all nodes - master first. Second is to review permissions, interfaces, IP addresses, storage groups, just going through it all.
Can you post the replication log? Also telling us which Image you updated recently. The output of ls -lahRt /images from the main server might reveal something.
Also, ensure all your fields for the storage node are filled out, such as web root, images path, ftp path, etc.