System.Data.Design.InternalException Issue in XSD while using Sql Server Compact 4

Question

 I am using Sql Server Compact 4 for creating Tableadapter in my XSD file. But after assigning tableadapter and running the application I am getting the following error..
Parser Error Message: Failed to generate code. Exception of type 'System.Data.Design.InternalException' was thrown.
Line 1:  <?xml version="1.0" encoding="utf-8"?>

Can any please help out.