AutoCAD .NET :: Not Able To Display PNG Files In Ribbon

I am trying to create a ribbon of my own, and the code and execution is fine, but I am not able to put the images.

my images are not more than 1 kb in size and are stored in the resources.resources1.... how do I get them to display.

I am trying to work with the available code found in one of the training sessions,

'Code starts

'on one of my subs I am calling this function 

'ribBtn.LargeImage = LoadImage("FR.png")

Private Shared Function LoadImage(ByRef ImageName As String) As Imaging.BitmapImage

Dim bi As New System.Windows.Media.Imaging.BitmapImage()

bi.BeginInit()
bi.StreamSource = GetEmbeddedResourceStream("MyRibbon_Autocad." & ImageName)
bi.EndInit() ' When i debug the code, the code is exiting at this point, i am assuming it is not getting initialised.
Return bi
End Function

Protected Shared Function GetEmbeddedResourceStream(ByVal ResourceName As String) As Stream
Return System.Reflection.Assembly.GetExecutingAssembly().GetManifestResourceStream(ResourceName)
End Function

I dont see any error, but the ribbon is getting generated but withut any images, just a plane ribbon.