Docked windows change positions

Hi, I have a problem with the docking manager. I do a SaveState() and LoadState() to persist Docking information. It works most of the time but sometimes when i load the app all the docked controls appear but are docked in different positions. Any reply is appreciated. Thanks

This is the code I''m using and my Syncfusion version is 2.1.0.9 While loading (Constructor) AppStateSerializer.InitializeSingleton(SerializeMode.XMLFile, DEFAULT_SAVEDOCKINFO_FILE ); this.m_DockManager.LoadDockState(); While closing this.m_DockManager.SaveDockState();