everybody looking for a solution to this erroe - please see resolution on this thread http://community.powerbi.com/t5/Issues/Error-Feature-switches-have-not-been-registered-yet-so-switch/idc-p/143172#M4576
seems to have solved issue for me.
Please do share your perspective on thoughts shared on this other thread around overall state of Power BI Embedded, and if you also believe we should be getting better support from MS if we're to continue using this for real production scenarios.