I am going to see if I can try and "reproduce" what I was doing as I am not 100% sure but below is the debug info.
Update: I was able to reproduce and it is pretty simple. If no file is open at all and you attempt to click on edit you will get this exception and like said this is build 187
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 ᤲ.ᠠᙍ(Object ᙂ, EventArgs ᙄ)
at System.Windows.Forms.ToolStripDropDownItem.OnDropDownOpened(EventArgs e)
at System.Windows.Forms.ToolStripDropDownItem.DropDown_Opened(Object sender, EventArgs e)
at System.Windows.Forms.ToolStripDropDown.OnOpened(EventArgs e)
at System.Windows.Forms.ToolStripDropDown.SetVisibleCore(Boolean visible)
at System.Windows.Forms.ToolStripDropDown.Show()
at System.Windows.Forms.ToolStripDropDownItem.ShowDropDownInternal()
at System.Windows.Forms.ToolStripDropDownItem.ShowDropDown(Boolean mousePush)
at System.Windows.Forms.ToolStripMenuItem.OnMenuAutoExpand()
at System.Windows.Forms.MenuTimer.OnTick(Object sender, EventArgs e)
at System.Windows.Forms.Timer.OnTick(EventArgs e)
at System.Windows.Forms.Timer.TimerNativeWindow.WndProc(Message& m)
at System.Windows.Forms.NativeWindow.Callback(IntPtr hWnd, Int32 msg, IntPtr wparam, IntPtr lparam)
************** Loaded Assemblies **************
mscorlib
Assembly Version: 2.0.0.0
Win32 Version: 2.0.50727.1433 (REDBITS.050727-1400)
CodeBase: file:///c:/WINDOWS/Microsoft.NET/Framework/v2.0.50727/mscorlib.dll
----------------------------------------
ScriptUO
Assembly Version: 0.0.0.0
Win32 Version: 0.0.0.0
CodeBase: file:///C:/Documents%20and%20Settings/christopher.grimm/Desktop/ScriptUO_v187.exe
----------------------------------------
System
Assembly Version: 2.0.0.0
Win32 Version: 2.0.50727.1433 (REDBITS.050727-1400)
CodeBase: file:///C:/WINDOWS/assembly/GAC_MSIL/System/2.0.0.0__b77a5c561934e089/System.dll
----------------------------------------
zip
Assembly Version: 0.0.0.0
Win32 Version: 0.0.0.0
CodeBase: file:///C:/Documents%20and%20Settings/christopher.grimm/Desktop/ScriptUO_v187.exe
----------------------------------------
ScriptUO
Assembly Version: 1.0.3110.29076
Win32 Version: 0.0.0.0
CodeBase: file:///C:/Documents%20and%20Settings/christopher.grimm/Desktop/ScriptUO_v187.exe
----------------------------------------
System.Windows.Forms
Assembly Version: 2.0.0.0
Win32 Version: 2.0.50727.1433 (REDBITS.050727-1400)
CodeBase: file:///C:/WINDOWS/assembly/GAC_MSIL/System.Windows.Forms/2.0.0.0__b77a5c561934e089/System.Windows.Forms.dll
----------------------------------------
System.Drawing
Assembly Version: 2.0.0.0
Win32 Version: 2.0.50727.1433 (REDBITS.050727-1400)
CodeBase: file:///C:/WINDOWS/assembly/GAC_MSIL/System.Drawing/2.0.0.0__b03f5f7f11d50a3a/System.Drawing.dll
----------------------------------------
Microsoft.VisualBasic
Assembly Version: 8.0.0.0
Win32 Version: 8.0.50727.1433 (REDBITS.050727-1400)
CodeBase: file:///C:/WINDOWS/assembly/GAC_MSIL/Microsoft.VisualBasic/8.0.0.0__b03f5f7f11d50a3a/Microsoft.VisualBasic.dll
----------------------------------------
ICSharpCode.TextEditor
Assembly Version: 0.0.0.0
Win32 Version: 0.0.0.0
CodeBase: file:///C:/Documents%20and%20Settings/christopher.grimm/Desktop/ScriptUO_v187.exe
----------------------------------------
System.Xml
Assembly Version: 2.0.0.0
Win32 Version: 2.0.50727.1433 (REDBITS.050727-1400)
CodeBase: file:///C:/WINDOWS/assembly/GAC_MSIL/System.Xml/2.0.0.0__b77a5c561934e089/System.Xml.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.