Thank you for writing.
Our Save/Load API is relying on .NET 2.0 and cannot serialize the custom aggregation functions because it cannot use the DataContract
attribute. In case you would be using our .40(.NET 4.0) assemblies you could serialize and deserialize the custom functions by implementing a custom DataProviderSerializer similar to the approach with serialization
of cubes: http://docs.telerik.com/devtools/winforms/pivotgrid/save-and-load-layout/serialize-adomddataprovider
I am sending you attached a sample project which should get you going.
I hope this helps. Please let me know if you need further assistance.
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