I have tried both the stable release and dev versions and have the same issue with this module. when viewing a user search the apache solr search interface breaks not returning anything and removing all styling etc from the page, search works fine if only node entity types are returned in the search results.

I have tried to debug this and found that the following entity API code in entity.module conflicts with this module and when these callbacks are commented out it returns results of users.

/**
* Label callback that refers to the entity classes label method.
*/
function entity_class_label($entity) {
return $entity->label();
}

/**
* URI callback that refers to the entity classes uri method.
*/
function entity_class_uri($entity) {
return $entity->uri();
}

Any help in making the module compliant with Entity API would be appreciated