System::AppDomain::CurrentDomain->UnhandledException event occured
SENDER: Name:DefaultDomain
There are no context policies.
EXCEPTION: System.Runtime.InteropServices.SEHException
MESSAGE: External component has thrown an exception.
SOURCE: RhinoCommon
CALL STACK
at UnsafeNativeMethods.CRhCmnUserData_Delete(IntPtr pUserData, Boolean only_i
f_no_parent)
at Rhino.DocObjects.Custom.UserData.Dispose(Boolean disposing)
at Rhino.DocObjects.Custom.UserData.Finalize()