You've just added IdeaBlade assembly references manually to your project and built it when you get this error:
Cannot resolve reference assemblies. Please check the reference assemblies. Could not load file or assembly 'System.Runtime.Serialization, Version=2.0.5.0, Culture=neutral, PublicKeyToken=7cec85d7bea7798e' or one of its dependencies. The system cannot find the file specified. C:\Users\...\BlahBlahBlah
Your response is simple: add 'System.Runtime.Serialization' to your project references; it's in the global assembly cache; the Add References dialog shows it under the ".NET" tab.