How did you create your resx file?

A normal way to add a resource to a project is Menu Project/Properties - resource tab, add an existing file (in your case).

In your app folder there is My Project folder
There should be a Resources.Designer.vb file

Check if it exists and contains the following:
vb.net Code:
  1. Namespace My.Resources
  2.         ' Rest of code skipped
  3.  
  4.         Friend ReadOnly Property iiii() As Byte()
  5.             Get
  6.                 Dim obj As Object = ResourceManager.GetObject("iiii", resourceCulture)
  7.                 Return CType(obj,Byte())
  8.             End Get
  9.         End Property
  10.     End Module
  11. End Namespace