Hi Ampelio,
Thank you for your interest in Syncfusion products.
Load dock state from XMLFmtStream.Please load the dock state from XMLFmtStream using the following code snippet.
[C#]
AppStateSerializer aser = new AppStateSerializer(SerializeMode.XMLFmtStream, ms);
ms.Seek(0, SeekOrigin.Begin);
this.dockingManager1.LoadDockState(aser);
SamplePlease refer the sample that demonstartes the same and let us know if you have any other queries.
http://websamples.syncfusion.com/samples/Tools.Windows/F71624/main.htmRegards,
Jaya