Dear SWATers,
I receive an error like this :

Also, when I click to import DEM or anything else in Watershed Delineation Window, I get an error such as below :
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 SWAT_WD.frmMain.cmdOpenDem_Click(Object eventSender, EventArgs eventArgs)
at System.Windows.Forms.Control.OnClick(EventArgs e)
at System.Windows.Forms.Button.OnClick(EventArgs e)
at System.Windows.Forms.Button.OnMouseUp(MouseEventArgs mevent)
at System.Windows.Forms.Control.WmMouseUp(Message& m, MouseButtons button, Int32 clicks)
at System.Windows.Forms.Control.WndProc(Message& m)
at System.Windows.Forms.ButtonBase.WndProc(Message& m)
at System.Windows.Forms.Button.WndProc(Message& m)
at System.Windows.Forms.ControlNativeWindow.OnMessage(Message& m)
at System.Windows.Forms.ControlNativeWindow.WndProc(Message& m)
at System.Windows.Forms.NativeWindow.Callback(IntPtr hWnd, Int32 msg, IntPtr wparam, IntPtr lparam)
************** Loaded Assemblies **************
mscorlib
Assembly Version: 1.0.5000.0
Win32 Version: 1.1.4322.2407
CodeBase: file:///c:/windows/microsoft.net/framework/v1.1.4322/mscorlib.dll
----------------------------------------
SWAT_HRUs
Assembly Version: 0.0.0.0
Win32 Version: 0.0.0.0
CodeBase: file:///E:/Program%20Files/ArcSWAT/SWAT_HRUs.dll
----------------------------------------
ESRI.ArcGIS.System
Assembly Version: 9.1.0.722
Win32 Version: 9.1.0.722
CodeBase: file:///c:/windows/assembly/gac/esri.arcgis.system/9.1.0.722__8fc3cc631e44ad86/esri.arcgis.system.dll
----------------------------------------
SWAT_WD
Assembly Version: 1.1.2981.23832
Win32 Version: 1.1.2981.23832
CodeBase: file:///E:/Program%20Files/ArcSWAT/SWAT_WD.dll
----------------------------------------
SWAT_PM
Assembly Version: 1.0.2981.23832
Win32 Version: 1.0.2981.23832
CodeBase: file:///E:/Program%20Files/ArcSWAT/SWAT_PM.dll
----------------------------------------
Microsoft.VisualBasic
Assembly Version: 7.0.5000.0
Win32 Version: 7.10.6001.4
CodeBase: file:///c:/windows/assembly/gac/microsoft.visualbasic/7.0.5000.0__b03f5f7f11d50a3a/microsoft.visualbasic.dll
----------------------------------------
ESRI.ArcGIS.ArcMapUI
Assembly Version: 9.1.0.722
Win32 Version: 9.1.0.722
CodeBase: file:///c:/windows/assembly/gac/esri.arcgis.arcmapui/9.1.0.722__8fc3cc631e44ad86/esri.arcgis.arcmapui.dll
----------------------------------------
Interop.Scripting
Assembly Version: 1.0.0.0
Win32 Version: 1.0.0.0
CodeBase: file:///E:/Program%20Files/ArcSWAT/Interop.Scripting.DLL
----------------------------------------
System.Windows.Forms
Assembly Version: 1.0.5000.0
Win32 Version: 1.1.4322.2032
CodeBase: file:///c:/windows/assembly/gac/system.windows.forms/1.0.5000.0__b77a5c561934e089/system.windows.forms.dll
----------------------------------------
ESRI.ArcGIS.Framework
Assembly Version: 9.1.0.722
Win32 Version: 9.1.0.722
CodeBase: file:///c:/windows/assembly/gac/esri.arcgis.framework/9.1.0.722__8fc3cc631e44ad86/esri.arcgis.framework.dll
----------------------------------------
ESRI.ArcGIS.SystemUI
Assembly Version: 9.1.0.722
Win32 Version: 9.1.0.722
CodeBase: file:///c:/windows/assembly/gac/esri.arcgis.systemui/9.1.0.722__8fc3cc631e44ad86/esri.arcgis.systemui.dll
----------------------------------------
SWAT_InputFileGen
Assembly Version: 1.0.2981.23833
Win32 Version: 1.0.2981.23833
CodeBase: file:///E:/Program%20Files/ArcSWAT/SWAT_InputFileGen.dll
----------------------------------------
SWAT_InputFileEdit
Assembly Version: 1.0.2981.23833
Win32 Version: 1.0.2981.23833
CodeBase: file:///E:/Program%20Files/ArcSWAT/SWAT_InputFileEdit.dll
----------------------------------------
SWAT_RunSwat
Assembly Version: 1.0.2981.23833
Win32 Version: 1.0.2981.23833
CodeBase: file:///E:/Program%20Files/ArcSWAT/SWAT_RunSwat.dll
----------------------------------------
System
Assembly Version: 1.0.5000.0
Win32 Version: 1.1.4322.2407
CodeBase: file:///c:/windows/assembly/gac/system/1.0.5000.0__b77a5c561934e089/system.dll
----------------------------------------
System.Drawing
Assembly Version: 1.0.5000.0
Win32 Version: 1.1.4322.2032
CodeBase: file:///c:/windows/assembly/gac/system.drawing/1.0.5000.0__b03f5f7f11d50a3a/system.drawing.dll
----------------------------------------
ESRI.ArcGIS.Carto
Assembly Version: 9.1.0.722
Win32 Version: 9.1.0.722
CodeBase: file:///c:/windows/assembly/gac/esri.arcgis.carto/9.1.0.722__8fc3cc631e44ad86/esri.arcgis.carto.dll
----------------------------------------
ESRI.ArcGIS.Catalog
Assembly Version: 9.1.0.722
Win32 Version: 9.1.0.722
CodeBase: file:///c:/windows/assembly/gac/esri.arcgis.catalog/9.1.0.722__8fc3cc631e44ad86/esri.arcgis.catalog.dll
----------------------------------------
ESRI.ArcGIS.CatalogUI
Assembly Version: 9.1.0.722
Win32 Version: 9.1.0.722
CodeBase: file:///c:/windows/assembly/gac/esri.arcgis.catalogui/9.1.0.722__8fc3cc631e44ad86/esri.arcgis.catalogui.dll
----------------------------------------
ESRI.ArcGIS.Geodatabase
Assembly Version: 9.1.0.722
Win32 Version: 9.1.0.722
CodeBase: file:///c:/windows/assembly/gac/esri.arcgis.geodatabase/9.1.0.722__8fc3cc631e44ad86/esri.arcgis.geodatabase.dll
----------------------------------------
ESRI.ArcGIS.DataSourcesGDB
Assembly Version: 9.1.0.722
Win32 Version: 9.1.0.722
CodeBase: file:///c:/windows/assembly/gac/esri.arcgis.datasourcesgdb/9.1.0.722__8fc3cc631e44ad86/esri.arcgis.datasourcesgdb.dll
----------------------------------------
ESRI.ArcGIS.GeoDatabaseUI
Assembly Version: 9.1.0.722
Win32 Version: 9.1.0.722
CodeBase: file:///c:/windows/assembly/gac/esri.arcgis.geodatabaseui/9.1.0.722__8fc3cc631e44ad86/esri.arcgis.geodatabaseui.dll
----------------------------------------
ESRI.ArcGIS.DataSourcesFile
Assembly Version: 9.1.0.722
Win32 Version: 9.1.0.722
CodeBase: file:///c:/windows/assembly/gac/esri.arcgis.datasourcesfile/9.1.0.722__8fc3cc631e44ad86/esri.arcgis.datasourcesfile.dll
----------------------------------------
ESRI.ArcGIS.DataSourcesRaster
Assembly Version: 9.1.0.722
Win32 Version: 9.1.0.722
CodeBase: file:///c:/windows/assembly/gac/esri.arcgis.datasourcesraster/9.1.0.722__8fc3cc631e44ad86/esri.arcgis.datasourcesraster.dll
----------------------------------------
ESRI.ArcGIS.Editor
Assembly Version: 9.1.0.722
Win32 Version: 9.1.0.722
CodeBase: file:///c:/windows/assembly/gac/esri.arcgis.editor/9.1.0.722__8fc3cc631e44ad86/esri.arcgis.editor.dll
----------------------------------------
Microsoft.VisualBasic.Compatibility
Assembly Version: 7.0.5000.0
Win32 Version: 7.10.3077
CodeBase: file:///E:/Program%20Files/ArcSWAT/Microsoft.VisualBasic.Compatibility.DLL
----------------------------------------
ESRI.ArcGIS.Geometry
Assembly Version: 9.1.0.722
Win32 Version: 9.1.0.722
CodeBase: file:///c:/windows/assembly/gac/esri.arcgis.geometry/9.1.0.722__8fc3cc631e44ad86/esri.arcgis.geometry.dll
----------------------------------------
ESRI.ArcGIS.GeoAnalyst
Assembly Version: 9.1.0.722
Win32 Version: 9.1.0.722
CodeBase: file:///c:/windows/assembly/gac/esri.arcgis.geoanalyst/9.1.0.722__8fc3cc631e44ad86/esri.arcgis.geoanalyst.dll
----------------------------------------
************** JIT Debugging **************
To enable just in time (JIT) debugging, the config file for this
application or machine (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 machine
rather than being handled by this dialog.
I try to install .Net Framework 1.1 and its SP1.1 again and Also I repaired my ARCGIS 9.1 installataion and ARCSWAT also. But the rror still exists.
Any help will be appreciated.
Sincerely Yours.
Behnam Ababaei
Irrigation and Reclamation Department,
Soil and Water Engineering Faculty,
University of Tehran,
Karaj , Iran.