点击WinCC flexible 2007图标后单击“打开一个现有的项目”选择项目时出现“winccflexible 2004 遇到了问题，需要关闭。对由此引起的不便表示歉意。 如果处在过程处理当中，您正在工作的信息可能丢失。这是为 WinCC flexible 2004 自动生成的错误报告。

Microsoft Windows XP Professional Service Pack 2 5.1.2600.131072

产品版本: WinCC flexible 2007 Standard; V 1.02; V 1.2.0.0 (1.55.01)


System.NullReferenceException
Object reference not set to an instance of an object.

Exception Source
Startup

Exception Target Site
Void .ctor(Siemens.Simatic.Hmi.Utah.Common.Utils.Win32.FolderItem)

Exception Stack Trace
at Siemens.Simatic.Hmi.Utah.Common.UI.Controls.FileControls.Win32FileInfo..ctor(FolderItem folderItem)
at Siemens.Simatic.Hmi.Utah.Common.UI.Controls.FileControls.FileBrowseTreeView.AddDesktopNode()
at Siemens.Simatic.Hmi.Utah.Common.UI.Controls.FileControls.FileBrowseTreeView.AddRootNodes()
at Siemens.Simatic.Hmi.Utah.Common.UI.Controls.FileControls.FileBrowseTreeView.set_SelectedFileInfo(Win32FileInfo value)
at Siemens.Simatic.Hmi.Utah.Common.UI.Controls.FileControls.FileBrowseControl.SetSpecialFolder(ShellSpecialFolderConstants folderType)
at Siemens.Simatic.Hmi.Utah.Common.UI.Controls.FileControls.OpenDialogControl.linkChangedEventHandler(Object sender, SideBarLinkEvent e)
at DevExpress.SideBar.SideBarCtl.OnStuckLinkChanged(Link link)
at DevExpress.SideBar.SideBarCtl.SetStuckLink(Link value, Boolean byMouse)
at DevExpress.SideBar.SideBarCtl.OnMouseUp(MouseEventArgs e)
at System.Windows.Forms.Control.WmMouseUp(Message& m, MouseButtons button, Int32 clicks)
at System.Windows.Forms.Control.WndProc(Message& m)
at System.Windows.Forms.Control.ControlNativeWindow.OnMessage(Message& m)
at System.Windows.Forms.Control.ControlNativeWindow.WndProc(Message& m)
at System.Windows.Forms.NativeWindow.Callback(IntPtr hWnd, Int32 msg, IntPtr wparam, IntPtr lparam)
End Exception” 各位大侠谁遇到过？帮忙指点一下！