Recently had an IP address change on one of the Amazon servers running the EPrints repository software. Although the new IP resolves to the new machine all the internal links within the EPrints software are linking to the old IP.
Solution is very simple, just another reason to like EPrints. Simply use the ./epadmin config_core command followed by the repository name like this.
Prompt$ cd /usr/share/eprints3/bin
Prompt$ ./epadmin config_core repos_name