I'm having issues with ECK and Inline Entity Form, when I try to add entities to my node the entity never finishes loading.

If I check the errors I get a php error EntityMetadataWrapperException: Unknown data property title. in EntityStructureWrapper->getPropertyInfo()

any guidance?

ECK: 7.x-2.0-rc7
Inline Entity Form: 7.x-1.5
Entity API: 7.x-1.5