Todd,
Seems like Ultipro is expecting some custom NameID which should be with format 'urn:oasis:names:tc:SAML:1.1:nameid-format:unspecified' and this NameID will be based on some 'UserAttribute' ( which can be UID or Email_Address, Ultipro can decide ).
It's not possible to create and map custom NameID with Gluu Server's GUI ( oxTrust ) right now. For our customers, Gluu Engineers are creating such custom attribute manually.