tutorials 1 to 11 get this exception HELP !!!! :}

[precious roy]

ok i get this exception withe evry tutorial til 12 (12 works) i just download and build it and it fails to run do to an exception here is exception info

System.TypeInitializationException was unhandled
  Message="The type initializer for 'HMDemo' threw an exception."
  Source="Hazy Mind Demo"
  TypeName="HMDemo"
  StackTrace:
       at HMDemo.Main()
       at System.AppDomain.nExecuteAssembly(Assembly assembly, String[] args)
       at System.AppDomain.ExecuteAssembly(String assemblyFile, Evidence assemblySecurity, String[] args)
       at Microsoft.VisualStudio.HostingProcess.HostProc.RunUsersAssembly()
       at System.Threading.ThreadHelper.ThreadStart_Context(Object state)
       at System.Threading.ExecutionContext.Run(ExecutionContext executionContext, ContextCallback callback, Object state)
       at System.Threading.ThreadHelper.ThreadStart()