Problem deserializing Post

Hai..,

When i am getting in to the facebook feed iam getting a error in "deserializePost" method of objectMapper.readValue(node, type) place
objectMapper.readValue(node, type)

on this error "Caused by: org.codehaus.jackson.map.JsonMappingException: No suitable constructor found for type [simple type, class org.springframework.social.facebook.api.Post]: can not instantiate from JSON object (need to add/enable type information?)"


so , please help me

thanking you
k.praveen