topic Re: a error of closing enterprise guide 3.0 in SAS Enterprise Guide https://communities.sas.com/t5/SAS-Enterprise-Guide/a-error-of-closing-enterprise-guide-3-0/m-p/54455#M5760 You can try Tools-&gt;Options and Reset Docking Windows (if that's available).<BR /> <BR /> Chris Thu, 21 Apr 2011 11:23:38 GMT ChrisHemedinger 2011-04-21T11:23:38Z a error of closing enterprise guide 3.0 https://communities.sas.com/t5/SAS-Enterprise-Guide/a-error-of-closing-enterprise-guide-3-0/m-p/54454#M5759 hi <BR /> i used enterprise guide 3.0, there is a error when i close it ,, how can i solove the error? thanks verymuch ..<BR /> <BR /> <BR /> System.NullReferenceException<BR /> <BR /> ------------------------------ Technical Information Follows ------------------------------<BR /> <BR /> [Syncfusion.Tools] <BR /> <BR /> ---------------------------------------------------- <BR /> <BR /> at Syncfusion.Windows.Forms.Tools.DockingManager.set_DHCInFocus(DockHostController value)<BR /> at Syncfusion.Windows.Forms.Tools.DockHost.WndProc(Message&amp; msg)<BR /> at System.Windows.Forms.ControlNativeWindow.OnMessage(Message&amp; m)<BR /> at System.Windows.Forms.ControlNativeWindow.WndProc(Message&amp; m)<BR /> at System.Windows.Forms.NativeWindow.Callback(IntPtr hWnd, Int32 msg, IntPtr wparam, IntPtr lparam)System.NullReferenceException<BR /> <BR /> <BR /> ------------------------------ End of Technical Information ------------------------------ Thu, 21 Apr 2011 05:22:31 GMT https://communities.sas.com/t5/SAS-Enterprise-Guide/a-error-of-closing-enterprise-guide-3-0/m-p/54454#M5759 lzh 2011-04-21T05:22:31Z Re: a error of closing enterprise guide 3.0 https://communities.sas.com/t5/SAS-Enterprise-Guide/a-error-of-closing-enterprise-guide-3-0/m-p/54455#M5760 You can try Tools-&gt;Options and Reset Docking Windows (if that's available).<BR /> <BR /> Chris Thu, 21 Apr 2011 11:23:38 GMT https://communities.sas.com/t5/SAS-Enterprise-Guide/a-error-of-closing-enterprise-guide-3-0/m-p/54455#M5760 ChrisHemedinger 2011-04-21T11:23:38Z Re: a error of closing enterprise guide 3.0 https://communities.sas.com/t5/SAS-Enterprise-Guide/a-error-of-closing-enterprise-guide-3-0/m-p/54456#M5761 thanks Chris <BR /> <BR /> I solove the problem..... Fri, 22 Apr 2011 00:59:58 GMT https://communities.sas.com/t5/SAS-Enterprise-Guide/a-error-of-closing-enterprise-guide-3-0/m-p/54456#M5761 lzh 2011-04-22T00:59:58Z