[Users] "Create operation failed. Domain ISO already exists in the system."

Hi all, Currently I have some problems with the ISO and Export domain. The domains were pointing to an old nfs mount so I removed them. I got a red cross with "failed to remove". I restarted the VM running ovirt engine and the domains are gone in de storage view. Now I try to add the ISO domain again to point it to the new nfs server but I get the message "Create operation failed. Domain ISO already exists in the system." There is nothing in the logs and I can't find where it's configured. Can anyone tell me where to look and how to fix this manually? Running ovirt-engine 3.2.1-1 -- Kind regards, Jorick Astrego Netbulae B.V. Site: http://www.netbulae.eu