以上为图片：
以下为报错的详细内容：
注：这是一个办公软件 只有个别的电脑安装oa系统后,点击邮箱的功能才报此错。
请有解决过类似或者此问题的大佬请帮忙看看，谢谢。
************** Exception Text **************
System.NullReferenceException: Object reference not set to an instance of an object.
at FWFramework.Client.TextEditors.HtmlEditorBase.InitEditorControls()
at FWFramework.Client.TextEditors.HtmlEditor.InitEditor()
at FWFramework.Client.Design.FWHtmlEditor..ctor()
at FWFramework.Client.Mail.SendMail.()
at FWFramework.Client.Mail.SendMail..ctor()
at FWFramework.Client.Mail.FrmWrite.()
at FWFramework.Client.Mail.FrmWrite..ctor()
at FWFramework.Client.Mail.FrmMail.(Object , NavBarLinkEventArgs )
at DevExpress.XtraNavBar.NavBarItem.RaiseLinkEvent(Object linkEvent, NavBarItemLink link)
at DevExpress.XtraNavBar.NavBarItem.RaiseLinkClicked(NavBarItemLink link)
at DevExpress.XtraNavBar.NavBarItem.RaiseLinkClickedCore(NavBarItemLink link)
at DevExpress.XtraNavBar.NavBarControl.RaiseLinkClicked(NavBarItemLink link)
at DevExpress.XtraNavBar.ViewInfo.NavBarViewInfo.DoLinkClick(NavBarHitInfo hitInfo)
at DevExpress.XtraNavBar.ViewInfo.NavBarViewInfo.DoClick(NavBarHitInfo hitInfo)
at DevExpress.XtraNavBar.ViewInfo.NavBarViewInfo.OnMouseUp(MouseEventArgs e)
at DevExpress.XtraNavBar.NavBarControl.OnMouseUp(MouseEventArgs ev)
at System.Windows.Forms.Control.WmMouseUp(Message& m, MouseButtons button, Int32 clicks)
at System.Windows.Forms.Control.WndProc(Message& m)
at DevExpress.XtraNavBar.NavBarControl.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)
