House Builder RC10 crash

[alambik]

randomly crash of House Builder RC10 when clicking on items in the listbox.

When loading a uoh file, this error occurs:


---
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 Ultima.HouseDesign..ctor(String filePath)
at Ultima.Core.miLoadDesign_Click(Object sender, EventArgs e)
at Reflector.UserInterface.CommandBarControl.OnClick( EventArgs e)
at Reflector.UserInterface.CommandBarControl.PerformC lick(EventArgs e)
at Reflector.UserInterface.CommandBar.PerformClick(Co mmandBarItem item)
at Reflector.UserInterface.CommandBar.WndProc(Message & message)
at System.Windows.Forms.ControlNativeWindow.OnMessage (Message& m)
at System.Windows.Forms.ControlNativeWindow.WndProc(M essage& 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: 1.1.4322.573
CodeBase: file:///c:/windows/microsoft.net/framework/v1.1.4322/mscorlib.dll
----------------------------------------
HouseBuilder
Assembly Version: 0.0.0.0
Win32 Version: 0.0.0.0
CodeBase: file:///C:/Documents%20and%20Settings/duo%20duo%20de%20xie/Bureau/UO/APPLICATIONS/HouseBuilder/HouseBuilder.exe
----------------------------------------
System.Windows.Forms
Assembly Version: 1.0.5000.0
Win32 Version: 1.1.4322.573
CodeBase: file:///c:/windows/assembly/gac/system.windows.forms/1.0.5000.0__b77a5c561934e089/system.windows.forms.dll
----------------------------------------
System
Assembly Version: 1.0.5000.0
Win32 Version: 1.1.4322.573
CodeBase: file:///c:/windows/assembly/gac/system/1.0.5000.0__b77a5c561934e089/system.dll
----------------------------------------
System.Drawing
Assembly Version: 1.0.5000.0
Win32 Version: 1.1.4322.573
CodeBase: file:///c:/windows/assembly/gac/system.drawing/1.0.5000.0__b03f5f7f11d50a3a/system.drawing.dll
----------------------------------------
CommandBar
Assembly Version: 0.0.0.0
Win32 Version: 0.0.0.0
CodeBase: file:///C:/Documents%20and%20Settings/duo%20duo%20de%20xie/Bureau/UO/APPLICATIONS/HouseBuilder/CommandBar.DLL
----------------------------------------
Ultima
Assembly Version: 1.0.1338.1619
Win32 Version: 1.0.1338.1619
CodeBase: file:///C:/Documents%20and%20Settings/duo%20duo%20de%20xie/Bureau/UO/APPLICATIONS/HouseBuilder/Ultima.DLL
----------------------------------------
System.Xml
Assembly Version: 1.0.5000.0
Win32 Version: 1.1.4322.573
CodeBase: file:///c:/windows/assembly/gac/system.xml/1.0.5000.0__b77a5c561934e089/system.xml.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.