ERROR: The content type of a workflow task must be derived from the Workflow Task content type

I was getting “The content type of a workflow task must be derived from the Workflow Task content type” error while working with custom ASPX form for visual studio workflow, I have created custom content type which will be used into workflow, I have found out that my content type ID is incorrect by comparing it with some another content type ID. Visual studio activity “Createtaskwithcontenttype” must be inherited from workflow task.

Reference Links:                                

http://www.eggheadcafe.com/software/aspnet/30858987/login.aspx

http://social.msdn.microsoft.com/Forums/en-US/sharepointworkflow/thread/93679b02-bfa9-43c2-94ad-ec45191cd478