Problems

Error from IdP Discovery Service [" + sender + "]:

check aai_config.js there's a comment about trusted SPs

DiscoJuice shows a strange error disco-juice.html?cid=0

DiscoJuice wants to store information about your SP but because it is not in a trusted federation like eduGAIN it will fail. You can disable this in aai_config.js setting instance.responseUrl to ''.

Missing IDPs in the UI

DSpace must be able to connect to Shibboleth.sso/DiscoFeed (watch for trusted certificates if running on https)