Hi,

Whenever I try to create a work flow, that has a send notification in it i get the error below, but if the workflow does not contain send notification i can publish it without any issues. 

error I get when publishing with a send notification:

soap:ServerServer was unable to process request. ---> Failed to publish workflow: <Error><CompilerError Line="-1" Column="-1" Text="Type System.Workflow.ComponentModel.Serialization.ArrayExtension is not marked as authorized in the application configuration file." /></Error>