I have a WinGrid that allows the user to group rows.  After one group is set up, if the user clicks and drags on a data cell instead of a column header, the grid will throw an exception.  We are using an older version of your library, since updating to the newer version will require about 500 hrs of programming effort.  Is there any way I can add some code to catch this exception and simply allow my application to continue running.  This Grid is only being used to display data.  The only input type functionality is that we allow the user to select rows and request some actions on the data represented by that row.

Here is the stack trace:

See the end of this message for details on invoking just-in-time (JIT) debugging instead of this dialog box.

************** Exception Text ************** System.NullReferenceException: Object reference not set to an instance of an object.    at Infragistics.Win.UltraWinGrid.UltraGrid.Infragistics.Win.ISelectionManager.ItemNearestPoint(Point point, ISelectableItem lastItem)    at Infragistics.Win.SelectionStrategyExtended.OnMouseMove(ISelectableItem item, MouseMessageInfo& msginfo)    at Infragistics.Win.SelectionStrategyExtended.OnMouseMessage(ISelectableItem item, MouseMessageInfo& msginfo)    at Infragistics.Win.ControlUIElementBase.ProcessMouseMoveHelper(Object sender, MouseEventArgs e)    at Infragistics.Win.ControlUIElementBase.ProcessMouseMove(Object sender, MouseEventArgs e)    at Infragistics.Win.Utilities.ProcessEvent(Control control, ProcessEvent eventToProcess, EventArgs e)    at Infragistics.Win.UltraControlBase.OnMouseMove(MouseEventArgs e)    at System.Windows.Forms.Control.WmMouseMove(Message& m)    at System.Windows.Forms.Control.WndProc(Message& m)    at System.Windows.Forms.NativeWindow.Callback(IntPtr hWnd, Int32 msg, IntPtr wparam, IntPtr lparam)

************** Loaded Assemblies ************** mscorlib     Assembly Version: 4.0.0.0     Win32 Version: 4.0.30319.17929 built by: FX45RTMREL     CodeBase: file:///C:/Windows/Microsoft.NET/Framework64/v4.0.30319/mscorlib.dll ---------------------------------------- Microsoft.VisualStudio.HostingProcess.Utilities     Assembly Version: 10.0.0.0     Win32 Version: 10.0.30319.1     CodeBase: file:///C:/Windows/assembly/GAC_MSIL/Microsoft.VisualStudio.HostingProcess.Utilities/10.0.0.0__b03f5f7f11d50a3a/Microsoft.VisualStudio.HostingProcess.Utilities.dll ---------------------------------------- System.Windows.Forms     Assembly Version: 4.0.0.0     Win32 Version: 4.0.30319.17929 built by: FX45RTMREL     CodeBase: file:///C:/Windows/Microsoft.Net/assembly/GAC_MSIL/System.Windows.Forms/v4.0_4.0.0.0__b77a5c561934e089/System.Windows.Forms.dll ---------------------------------------- System.Drawing     Assembly Version: 4.0.0.0     Win32 Version: 4.0.30319.17929 built by: FX45RTMREL     CodeBase: file:///C:/Windows/Microsoft.Net/assembly/GAC_MSIL/System.Drawing/v4.0_4.0.0.0__b03f5f7f11d50a3a/System.Drawing.dll ---------------------------------------- System     Assembly Version: 4.0.0.0     Win32 Version: 4.0.30319.17929 built by: FX45RTMREL     CodeBase: file:///C:/Windows/Microsoft.Net/assembly/GAC_MSIL/System/v4.0_4.0.0.0__b77a5c561934e089/System.dll ---------------------------------------- Microsoft.VisualStudio.HostingProcess.Utilities.Sync     Assembly Version: 10.0.0.0     Win32 Version: 10.0.30319.1     CodeBase: file:///C:/Windows/assembly/GAC_MSIL/Microsoft.VisualStudio.HostingProcess.Utilities.Sync/10.0.0.0__b03f5f7f11d50a3a/Microsoft.VisualStudio.HostingProcess.Utilities.Sync.dll ---------------------------------------- Microsoft.VisualStudio.Debugger.Runtime     Assembly Version: 10.0.0.0     Win32 Version: 10.0.30319.1     CodeBase: file:///C:/Windows/assembly/GAC_MSIL/Microsoft.VisualStudio.Debugger.Runtime/10.0.0.0__b03f5f7f11d50a3a/Microsoft.VisualStudio.Debugger.Runtime.dll ---------------------------------------- vshost     Assembly Version: 10.0.0.0     Win32 Version: 10.0.30319.1     CodeBase: file:///C:/QicLink_e2/V50/VSSolution/QicLinkAdmin/bin/Trizetto.QLe2.QicLinkAdmin.vshost.exe ---------------------------------------- System.Core     Assembly Version: 4.0.0.0     Win32 Version: 4.0.30319.17929 built by: FX45RTMREL     CodeBase: file:///C:/Windows/Microsoft.Net/assembly/GAC_MSIL/System.Core/v4.0_4.0.0.0__b77a5c561934e089/System.Core.dll ---------------------------------------- System.Data     Assembly Version: 4.0.0.0     Win32 Version: 4.0.30319.17929 built by: FX45RTMREL     CodeBase: file:///C:/Windows/Microsoft.Net/assembly/GAC_64/System.Data/v4.0_4.0.0.0__b77a5c561934e089/System.Data.dll ---------------------------------------- System.Data.DataSetExtensions     Assembly Version: 4.0.0.0     Win32 Version: 4.0.30319.17929 built by: FX45RTMREL     CodeBase: file:///C:/Windows/Microsoft.Net/assembly/GAC_MSIL/System.Data.DataSetExtensions/v4.0_4.0.0.0__b77a5c561934e089/System.Data.DataSetExtensions.dll ---------------------------------------- System.Deployment     Assembly Version: 4.0.0.0     Win32 Version: 4.0.30319.17929 built by: FX45RTMREL     CodeBase: file:///C:/Windows/Microsoft.Net/assembly/GAC_MSIL/System.Deployment/v4.0_4.0.0.0__b03f5f7f11d50a3a/System.Deployment.dll ---------------------------------------- System.Design     Assembly Version: 4.0.0.0     Win32 Version: 4.0.30319.17929 built by: FX45RTMREL     CodeBase: file:///C:/Windows/Microsoft.Net/assembly/GAC_MSIL/System.Design/v4.0_4.0.0.0__b03f5f7f11d50a3a/System.Design.dll ---------------------------------------- System.Drawing.Design     Assembly Version: 4.0.0.0     Win32 Version: 4.0.30319.17929 built by: FX45RTMREL     CodeBase: file:///C:/Windows/Microsoft.Net/assembly/GAC_MSIL/System.Drawing.Design/v4.0_4.0.0.0__b03f5f7f11d50a3a/System.Drawing.Design.dll ---------------------------------------- System.Runtime.Serialization.Formatters.Soap     Assembly Version: 4.0.0.0     Win32 Version: 4.0.30319.17929 built by: FX45RTMREL     CodeBase: file:///C:/Windows/Microsoft.Net/assembly/GAC_MSIL/System.Runtime.Serialization.Formatters.Soap/v4.0_4.0.0.0__b03f5f7f11d50a3a/System.Runtime.Serialization.Formatters.Soap.dll ---------------------------------------- System.Xml     Assembly Version: 4.0.0.0     Win32 Version: 4.0.30319.17929 built by: FX45RTMREL     CodeBase: file:///C:/Windows/Microsoft.Net/assembly/GAC_MSIL/System.Xml/v4.0_4.0.0.0__b77a5c561934e089/System.Xml.dll ---------------------------------------- Microsoft.VisualBasic     Assembly Version: 10.0.0.0     Win32 Version: 11.0.50709.17929 built by: FX45RTMREL     CodeBase: file:///C:/Windows/Microsoft.Net/assembly/GAC_MSIL/Microsoft.VisualBasic/v4.0_10.0.0.0__b03f5f7f11d50a3a/Microsoft.VisualBasic.dll ---------------------------------------- Trizetto.QLe2.QicLinkAdmin     Assembly Version: 1.0.0.0     Win32 Version: 1.0.0.0     CodeBase: file:///C:/QicLink_e2/V50/VSSolution/QicLinkAdmin/bin/Trizetto.QLe2.QicLinkAdmin.EXE ---------------------------------------- Trizetto.QLe2.QicLinkLibrary     Assembly Version: 1.0.5213.25600     Win32 Version: 1.0.5213.25600     CodeBase: file:///C:/QicLink_e2/V50/VSSolution/QicLinkAdmin/bin/Trizetto.QLe2.QicLinkLibrary.DLL ---------------------------------------- Trizetto.QLe2.QicLinkWinUtility     Assembly Version: 1.0.5213.25600     Win32 Version: 1.0.5213.25600     CodeBase: file:///C:/QicLink_e2/V50/VSSolution/QicLinkAdmin/bin/Trizetto.QLe2.QicLinkWinUtility.DLL ---------------------------------------- LogViewer     Assembly Version: 1.0.0.0     Win32 Version: 1.0.0.0     CodeBase: file:///C:/QicLink_e2/V50/VSSolution/QicLinkAdmin/bin/LogViewer.EXE ---------------------------------------- Infragistics2.Win.v11.1     Assembly Version: 11.1.20111.2111     Win32 Version: 11.1.20111.2111     CodeBase: file:///C:/Windows/assembly/GAC_MSIL/Infragistics2.Win.v11.1/11.1.20111.2111__7dd5c3163f2cd0cb/Infragistics2.Win.v11.1.dll ---------------------------------------- Infragistics2.Shared.v11.1     Assembly Version: 11.1.20111.2111     Win32 Version: 11.1.20111.2111     CodeBase: file:///C:/Windows/assembly/GAC_MSIL/Infragistics2.Shared.v11.1/11.1.20111.2111__7dd5c3163f2cd0cb/Infragistics2.Shared.v11.1.dll ---------------------------------------- Infragistics2.Win.UltraWinExplorerBar.v11.1     Assembly Version: 11.1.20111.2111     Win32 Version: 11.1.20111.2111     CodeBase: file:///C:/Windows/assembly/GAC_MSIL/Infragistics2.Win.UltraWinExplorerBar.v11.1/11.1.20111.2111__7dd5c3163f2cd0cb/Infragistics2.Win.UltraWinExplorerBar.v11.1.dll ---------------------------------------- Infragistics2.Win.UltraWinStatusBar.v11.1     Assembly Version: 11.1.20111.2111     Win32 Version: 11.1.20111.2111     CodeBase: file:///C:/Windows/assembly/GAC_MSIL/Infragistics2.Win.UltraWinStatusBar.v11.1/11.1.20111.2111__7dd5c3163f2cd0cb/Infragistics2.Win.UltraWinStatusBar.v11.1.dll ---------------------------------------- Trizetto.QLe2.QicLinkClientUtility     Assembly Version: 1.0.5213.25600     Win32 Version: 1.0.5213.25600     CodeBase: file:///C:/QicLink_e2/V50/VSSolution/QicLinkAdmin/bin/Trizetto.QLe2.QicLinkClientUtility.DLL ---------------------------------------- Trizetto.QLe2.QicLinkShared     Assembly Version: 1.0.5213.25600     Win32 Version: 1.0.5213.25600     CodeBase: file:///C:/QicLink_e2/V50/VSSolution/QicLinkAdmin/bin/Trizetto.QLe2.QicLinkShared.DLL ---------------------------------------- System.Configuration     Assembly Version: 4.0.0.0     Win32 Version: 4.0.30319.17929 built by: FX45RTMREL     CodeBase: file:///C:/Windows/Microsoft.Net/assembly/GAC_MSIL/System.Configuration/v4.0_4.0.0.0__b03f5f7f11d50a3a/System.Configuration.dll ---------------------------------------- Infragistics2.Win.UltraWinTabControl.v11.1     Assembly Version: 11.1.20111.2111     Win32 Version: 11.1.20111.2111     CodeBase: file:///C:/Windows/assembly/GAC_MSIL/Infragistics2.Win.UltraWinTabControl.v11.1/11.1.20111.2111__7dd5c3163f2cd0cb/Infragistics2.Win.UltraWinTabControl.v11.1.dll ---------------------------------------- System.ServiceModel     Assembly Version: 4.0.0.0     Win32 Version: 4.0.30319.17929 built by: FX45RTMREL     CodeBase: file:///C:/Windows/Microsoft.Net/assembly/GAC_MSIL/System.ServiceModel/v4.0_4.0.0.0__b77a5c561934e089/System.ServiceModel.dll ---------------------------------------- SMDiagnostics     Assembly Version: 4.0.0.0     Win32 Version: 4.0.30319.17929 built by: FX45RTMREL     CodeBase: file:///C:/Windows/Microsoft.Net/assembly/GAC_MSIL/SMDiagnostics/v4.0_4.0.0.0__b77a5c561934e089/SMDiagnostics.dll ---------------------------------------- System.Runtime.Serialization     Assembly Version: 4.0.0.0     Win32 Version: 4.0.30319.17929 built by: FX45RTMREL     CodeBase: file:///C:/Windows/Microsoft.Net/assembly/GAC_MSIL/System.Runtime.Serialization/v4.0_4.0.0.0__b77a5c561934e089/System.Runtime.Serialization.dll ---------------------------------------- System.ServiceModel.Internals     Assembly Version: 4.0.0.0     Win32 Version: 4.0.30319.17929 built by: FX45RTMREL     CodeBase: file:///C:/Windows/Microsoft.Net/assembly/GAC_MSIL/System.ServiceModel.Internals/v4.0_4.0.0.0__31bf3856ad364e35/System.ServiceModel.Internals.dll ---------------------------------------- System.Transactions     Assembly Version: 4.0.0.0     Win32 Version: 4.0.30319.17929 built by: FX45RTMREL     CodeBase: file:///C:/Windows/Microsoft.Net/assembly/GAC_64/System.Transactions/v4.0_4.0.0.0__b77a5c561934e089/System.Transactions.dll ---------------------------------------- Trizetto.QLe2.QicLinkEntities     Assembly Version: 1.0.5213.25600     Win32 Version: 1.0.5213.25600     CodeBase: file:///C:/QicLink_e2/V50/VSSolution/QicLinkAdmin/bin/Trizetto.QLe2.QicLinkEntities.DLL ---------------------------------------- Trizetto.QLe2.QicLinkEFModels     Assembly Version: 1.0.0.0     Win32 Version: 1.0.0.0     CodeBase: file:///C:/QicLink_e2/V50/VSSolution/QicLinkAdmin/bin/Trizetto.QLe2.QicLinkEFModels.DLL ---------------------------------------- System.Data.Entity     Assembly Version: 4.0.0.0     Win32 Version: 4.0.30319.17929 built by: FX45RTMREL     CodeBase: file:///C:/Windows/Microsoft.Net/assembly/GAC_MSIL/System.Data.Entity/v4.0_4.0.0.0__b77a5c561934e089/System.Data.Entity.dll ---------------------------------------- System.IdentityModel     Assembly Version: 4.0.0.0     Win32 Version: 4.0.30319.17929 built by: FX45RTMREL     CodeBase: file:///C:/Windows/Microsoft.Net/assembly/GAC_MSIL/System.IdentityModel/v4.0_4.0.0.0__b77a5c561934e089/System.IdentityModel.dll ---------------------------------------- Microsoft.VisualStudio.Diagnostics.ServiceModelSink     Assembly Version: 4.0.0.0     Win32 Version: 11.0.50727.1     CodeBase: file:///C:/Windows/Microsoft.Net/assembly/GAC_MSIL/Microsoft.VisualStudio.Diagnostics.ServiceModelSink/v4.0_4.0.0.0__b03f5f7f11d50a3a/Microsoft.VisualStudio.Diagnostics.ServiceModelSink.dll ---------------------------------------- System.Xaml     Assembly Version: 4.0.0.0     Win32 Version: 4.0.30319.17929 built by: FX45RTMREL     CodeBase: file:///C:/Windows/Microsoft.Net/assembly/GAC_MSIL/System.Xaml/v4.0_4.0.0.0__b77a5c561934e089/System.Xaml.dll ---------------------------------------- Accessibility     Assembly Version: 4.0.0.0     Win32 Version: 4.0.30319.17929 built by: FX45RTMREL     CodeBase: file:///C:/Windows/Microsoft.Net/assembly/GAC_MSIL/Accessibility/v4.0_4.0.0.0__b03f5f7f11d50a3a/Accessibility.dll ---------------------------------------- Infragistics2.Win.UltraWinGrid.v11.1     Assembly Version: 11.1.20111.2111     Win32 Version: 11.1.20111.2111     CodeBase: file:///C:/Windows/assembly/GAC_MSIL/Infragistics2.Win.UltraWinGrid.v11.1/11.1.20111.2111__7dd5c3163f2cd0cb/Infragistics2.Win.UltraWinGrid.v11.1.dll ---------------------------------------- Infragistics2.Win.Misc.v11.1     Assembly Version: 11.1.20111.2111     Win32 Version: 11.1.20111.2111     CodeBase: file:///C:/Windows/assembly/GAC_MSIL/Infragistics2.Win.Misc.v11.1/11.1.20111.2111__7dd5c3163f2cd0cb/Infragistics2.Win.Misc.v11.1.dll ---------------------------------------- Infragistics2.Win.UltraWinEditors.v11.1     Assembly Version: 11.1.20111.2111     Win32 Version: 11.1.20111.2111     CodeBase: file:///C:/Windows/assembly/GAC_MSIL/Infragistics2.Win.UltraWinEditors.v11.1/11.1.20111.2111__7dd5c3163f2cd0cb/Infragistics2.Win.UltraWinEditors.v11.1.dll ---------------------------------------- System.Numerics     Assembly Version: 4.0.0.0     Win32 Version: 4.0.30319.17929 built by: FX45RTMREL     CodeBase: file:///C:/Windows/Microsoft.Net/assembly/GAC_MSIL/System.Numerics/v4.0_4.0.0.0__b77a5c561934e089/System.Numerics.dll ----------------------------------------

************** JIT Debugging ************** To enable just-in-time (JIT) debugging, the .config file for this application or computer (machine.config) must have the jitDebugging value set in the system.windows.forms section. The application must also be compiled with debugging enabled.

For example:

<configuration>     <system.windows.forms jitDebugging="true" /> </configuration>

When JIT debugging is enabled, any unhandled exception will be sent to the JIT debugger registered on the computer rather than be handled by this dialog box.