v2.8.1.8 mono: Object reference not set

[baschie]

Dankjewel, dat lijkt te lukken, maar nu krijg ik een andere error als ik daadwerkelijk een video probeer te downloaden:

System.Exception: GDfetch.dll kon niet gevonden worden.
at GemistDownloader.ManualLinksSearch.getGenerator () [0x00000] in <filename unknown>:0
at GemistDownloader.ManualLinksSearch.fetchNPOserver (System.String id, System.String invoer, GemistDownloader.Downloader CurrentDownload) [0x00000] in <filename unknown>:0
at TestProcessCaller.Hoofdvenster.genereerlink (System.String link, System.String qindex, System.String itag, Boolean TwoStep, System.String originaalLink, Int32 iteratie) [0x00000] in <filename unknown>:0
at TestProcessCaller.Hoofdvenster.stap2_button_Click (System.Object sender, System.EventArgs e) [0x00000] in <filename unknown>:0
at System.Windows.Forms.Control.OnClick (System.EventArgs e) [0x00000] in <filename unknown>:0
at System.Windows.Forms.Button.OnClick (System.EventArgs e) [0x00000] in <filename unknown>:0
at System.Windows.Forms.ButtonBase.OnMouseUp (System.Windows.Forms.MouseEventArgs mevent) [0x00000] in <filename unknown>:0
at System.Windows.Forms.Button.OnMouseUp (System.Windows.Forms.MouseEventArgs mevent) [0x00000] in <filename unknown>:0
at System.Windows.Forms.Control.WmLButtonUp (System.Windows.Forms.Message& m) [0x00000] in <filename unknown>:0
at System.Windows.Forms.Control.WndProc (System.Windows.Forms.Message& m) [0x00000] in <filename unknown>:0
at System.Windows.Forms.ButtonBase.WndProc (System.Windows.Forms.Message& m) [0x00000] in <filename unknown>:0
at System.Windows.Forms.Button.WndProc (System.Windows.Forms.Message& m) [0x00000] in <filename unknown>:0
at System.Windows.Forms.Control+ControlWindowTarget.OnMessage (System.Windows.Forms.Message& m) [0x00000] in <filename unknown>:0
at System.Windows.Forms.Control+ControlNativeWindow.WndProc (System.Windows.Forms.Message& m) [0x00000] in <filename unknown>:0
at System.Windows.Forms.NativeWindow.WndProc (IntPtr hWnd, Msg msg, IntPtr wParam, IntPtr lParam) [0x00000] in <filename unknown>:0