New Post: Additional information: An error occured when call to 'gsapi_new_instance' is made: -100

I am getting the error I placed in the subject line

here it is again:
Additional information: An error occured when call to 'gsapi_new_instance' is made: -100


My Code:

 Dim desired_x_dpi As Integer = 96
Dim desired_y_dpi As Integer = 96

Dim inputPdfPath As String = objDownload.FilePath

objLastInstalledVersion = GhostscriptVersionInfo.GetLastInstalledVersion(GhostscriptLicense.GPL, GhostscriptLicense.GPL)

objRasterizer = New GhostscriptRasterizer()

objRasterizer.Open(inputPdfPath, objLastInstalledVersion, False)


Dim img As Image = objRasterizer.GetPage(desired_x_dpi, desired_y_dpi, 1)
Dim ms As New MemoryStream()
img.Save(ms, System.Drawing.Imaging.ImageFormat.Png)

imgPreview.Src = "data:image/png;base64," & Convert.ToBase64String(ms.ToArray)

GetLastInstalledVersion works and returns my 32bit version of gs.

the error is on this line:

objRasterizer.Open(inputPdfPath, objLastInstalledVersion, False)