Create bitmap from Inkcanvas Strokes

I'm trying to create a bitmap out of the strokes in an inkcanvas but i keep getting an error. I'm not sure why. Ill post the code and what line i keep getting the error at. The error is System.ArgumentException: Parameter is not valid.
at System.Drawing.Bitmap..ctor(Stream stream)
at MeasureTest.Window1.Analyze() in ...\Window1.xaml.vb:line 109
I appreciate any help anyone can give me.

Code:

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          Dim ms As New MemoryStream
            ink1.Strokes.Save(ms)
            Dim bits As Byte() = ms.ToArray
            Dim memorybits As New MemoryStream(bits)
            Dim bitmap As New System.Drawing.Bitmap(memorybits) 'Error Here **********
            Dim bit As BitmapSource = Imaging.CreateBitmapSourceFromHBitmap(bitmap.GetHbitmap, IntPtr.Zero, Int32Rect.Empty, _
                                                            BitmapSizeOptions.FromEmptyOptions())
            Dim Testimage As New Image
            Testimage.Source = CType(bit, ImageSource)

---

import Microsoft.Ink.Dll

Code:

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Dim sc As StrokeCollection = ink1.Strokes
            Dim inkData As Byte() = Nothing
            Using inkMemStream As New MemoryStream
                sc.Save(inkMemStream)
                inkData = inkMemStream.ToArray()
            End Using
            Dim gifData As Byte() = Nothing
            Using ink2 As New Microsoft.Ink.Ink()
                ink2.Load(inkData)
                gifData = ink2.Save(Microsoft.Ink.PersistenceFormat.Gif)
            End Using
            File.WriteAllBytes("c://strokes.gif", gifData)

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