I changed the reference and appears 2 errors, I changed:

System.Windows.Forms.ScrollEventArgs to DevExpress.XtraEditors.XtraScrollEventArgs in
"Private Sub pnlContent_Scroll(ByVal sender As Object, ByVal e As DevExpress.XtraEditors.XtraScrollEventArgs) Handles pnlContent.Scroll"

for the errors "a 'DevExpress.XtraEditors.SplitGroupPanel' value cannot be converted to 'System.Windows.Forms.Panel'. C:\Archivos de programa\MicroFour\StrataFrame Source Code\MicroFour StrataFrame Inherited UI\DevExpress Extended\Dialogs\.... MicroFour StrataFrame Inherited UI"
I changed
Dim loPanel As Panel = Nothing to:
Dim loPanel As devexpress.XtraEditors.SplitGroupPanel = Nothing

this seems to work, but I not sure if later I have another problem with this. thanks