System.AggregateException: One or more errors occurred. ---> System.IO.FileFormatException:

[ygl95]

Hi,
I installed ExperienceExtractor-0.3.1-8.2.zip. I tried selecting a dimension, changing the date range to January - February, and trying to generate the report I'm getting the following error when I click submit.

System.AggregateException: One or more errors occurred. ---> System.IO.FileFormatException: An error occurred while deserializing the Pages property of class Sitecore.Analytics.Model.VisitData: An error occurred while deserializing the PageEvents property of class Sitecore.Analytics.Model.PageData: An error occurred while deserializing the CustomValues property of class Sitecore.Analytics.Model.Entity: String cannot have zero length. ---> System.IO.FileFormatException: An error occurred while deserializing the PageEvents property of class Sitecore.Analytics.Model.PageData: An error occurred while deserializing the CustomValues property of class Sitecore.Analytics.Model.Entity: String cannot have zero length. ---> System.IO.FileFormatException: An error occurred while deserializing the CustomValues property of class Sitecore.Analytics.Model.Entity: String cannot have zero length. ---> System.ArgumentException: String cannot have zero length.
at System.Reflection.RuntimeAssembly.GetType(RuntimeAssembly assembly, String name, Boolean throwOnError, Boolean ignoreCase, ObjectHandleOnStack type)
at System.Reflection.RuntimeAssembly.GetType(String name, Boolean throwOnError, Boolean ignoreCase)
at MongoDB.Bson.Serialization.TypeNameDiscriminator.GetActualType(String typeName)
at MongoDB.Bson.Serialization.TypeNameDiscriminator.GetActualType(String typeName)
at MongoDB.Bson.Serialization.TypeNameDiscriminator.GetActualType(String typeName)
at MongoDB.Bson.Serialization.BsonSerializer.LookupActualType(Type nominalType, BsonValue discriminator)
at MongoDB.Bson.Serialization.Conventions.StandardDiscriminatorConvention.GetActualType(BsonReader bsonReader, Type nominalType)
at MongoDB.Bson.Serialization.Serializers.KeyValuePairSerializer2.Deserialize(BsonReader bsonReader, Type nominalType, Type actualType, IBsonSerializationOptions options) at MongoDB.Bson.Serialization.Serializers.BsonBaseSerializer.Deserialize(BsonReader bsonReader, Type nominalType, IBsonSerializationOptions options) at MongoDB.Bson.Serialization.Serializers.DictionarySerializer2.Deserialize(BsonReader bsonReader, Type nominalType, Type actualType, IBsonSerializationOptions options)
at MongoDB.Bson.Serialization.BsonClassMapSerializer.DeserializeMemberValue(BsonReader bsonReader, BsonMemberMap memberMap)