.NET Program

sorry if i post in not the needed forum... i cant find the related to .NET... So...

I have a tool... I Can launch it... but when i use some options it crashes with error:

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 GumpStudio.Elements.BackgroundElement.Render(Graphics Target)

at GumpStudio.Elements.GroupElement.Render(Graphics Target)

at GumpStudio.DesignerForm.Render(Graphics Target)

at GumpStudio.DesignerForm.picCanvas_Paint(Object sender, PaintEventArgs e)

at System.Windows.Forms.Control.OnPaint(PaintEventArgs e)

at System.Windows.Forms.PictureBox.OnPaint(PaintEventArgs pe)

at System.Windows.Forms.Control.PaintWithErrorHandling(PaintEventArgs e, Int16 layer, Boolean disposeEventArgs)

at System.Windows.Forms.Control.WmPaint(Message& m)

at System.Windows.Forms.Control.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: 1.1.4322.2032

CodeBase: file:///c:/windows/microsoft.net/framework/v1.1.4322/mscorlib.dll

----------------------------------------

GumpStudio

Assembly Version: 1.6.1828.18505

Win32 Version: 1.6.1828.18505

CodeBase: file:///C:/Documents%20and%20Settings/Toms/Desktop/GumpStudio_1_7/GumpStudio.exe

----------------------------------------

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

----------------------------------------

GumpStudioCore

Assembly Version: 1.6.1828.18502

Win32 Version: 1.6.1828.18502

CodeBase: file:///C:/Documents%20and%20Settings/Toms/Desktop/GumpStudio_1_7/GumpStudioCore.DLL

----------------------------------------

System

Assembly Version: 1.0.5000.0

Win32 Version: 1.1.4322.2032

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

----------------------------------------

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

----------------------------------------

exporter

Assembly Version: 1.0.1515.31194

Win32 Version: 1.0.1515.31194

CodeBase: file:///c:/documents%20and%20settings/toms/desktop/gumpstudio_1_7/plugins/exporter.dll

----------------------------------------

ImportRunUOPlugin

Assembly Version: 1.0.1588.31612

Win32 Version: 1.0.1588.31612

CodeBase: file:///c:/documents%20and%20settings/toms/desktop/gumpstudio_1_7/plugins/importrunuoplugin.dll

----------------------------------------

POLExport

Assembly Version: 1.0.1791.35901

Win32 Version: 1.0.1791.35901

CodeBase: file:///c:/documents%20and%20settings/toms/desktop/gumpstudio_1_7/plugins/polexport.dll

----------------------------------------

SnapToGrid

Assembly Version: 1.1.1588.31612

Win32 Version: 1.1.1588.31612

CodeBase: file:///c:/documents%20and%20settings/toms/desktop/gumpstudio_1_7/plugins/snaptogrid.dll

----------------------------------------

SphereGumpExport

Assembly Version: 1.0.1840.31013

Win32 Version: 1.0.1840.31013

CodeBase: file:///c:/documents%20and%20settings/toms/desktop/gumpstudio_1_7/plugins/spheregumpexport.dll

----------------------------------------

WallPaperPlugin

Assembly Version: 1.0.1588.31612

Win32 Version: 1.0.1588.31612

CodeBase: file:///c:/documents%20and%20settings/toms/desktop/gumpstudio_1_7/plugins/wallpaperplugin.dll

----------------------------------------

WolfpackExport

Assembly Version: 1.0.1507.537

Win32 Version:

CodeBase: file:///c:/documents%20and%20settings/toms/desktop/gumpstudio_1_7/plugins/wolfpackexport.dll

----------------------------------------

Ultima

Assembly Version: 1.0.1502.21826

Win32 Version: 1.0.1502.21826

CodeBase: file:///C:/Documents%20and%20Settings/Toms/Desktop/GumpStudio_1_7/Ultima.DLL

----------------------------------------

UOFont

Assembly Version: 1.0.1506.38608

Win32 Version: 1.0.1506.38608

CodeBase: file:///C:/Documents%20and%20Settings/Toms/Desktop/GumpStudio_1_7/UOFont.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.

Maybe you got something to tell me how to make that his works?

--

Already installed thing which i thought would be needed:

dotnetfx 1.0

dotnetfx 1.1

dotnetfx 1.1 SP2

dotnetfx 2.0