Hi!
I bootet a Live Linux (Knoppix), tried to upload an ISO and got the following error message:
Server not specified: vcloud://?org=myOrg&media=something.iso&catalog=myOrg Catalog
Maybe this is a different issue but I don't think so. You see, if the plugin doesn't know where to connect to then there's no SSL connection and, therefore, no actual SSL fingerprint to be displayed.
Would it be possible for you to try the same?
cu
Mario