Type 'Microsoft.Crm.Visualizations.DataDefinition' cannot be serialized.

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  I'm tryingto import an
  unmanagedsolution,
  
  shows
  mefollowing error:

  Type 'Microsoft.Crm.Visualizations.DataDefinition' cannot be serialized.
  Consider marking it with the DataContractAttribute attribute, and marking all of
  its members you want serialized with the DataMemberAttribute attribute. If the
  type is a collection, consider marking it with the
  CollectionDataContractAttribute. See the Microsoft .NET Framework documentation
  for other supported types.
  
  anyone can help
  me?

  Monday, September 17, 2012 3:13 PM