Exception Error Launching Default Browser "Firefox"

[eddie69]

Hi,

My application has a Toolstrip with a Help button which launches a htm help file.
It works fine when the system's default browser is IE.
When Firefox is set as default, the application complains with an exection error:

************** Exception Text **************
System.ComponentModel.Win32Exception: The system cannot find the file specified
at System.Diagnostics.Process.StartWithShellExecuteEx (ProcessStartInfo startInfo)
at System.Diagnostics.Process.Start()
at System.Diagnostics.Process.Start(ProcessStartInfo startInfo)
at System.Diagnostics.Process.Start(String fileName, String arguments)
at Sneaky.Sneaky.ContentToolStrip(Object sender, EventArgs e) in C:\Documents and Settings\Administrator\My Documents\Visual Studio 2005\Projects\Sneaky\Sneaky\Sneaky.vb:line 352
at System.Windows.Forms.ToolStripItem.RaiseEvent(Obje ct key, EventArgs e)
at System.Windows.Forms.ToolStripMenuItem.OnClick(Eve ntArgs e)
at System.Windows.Forms.ToolStripItem.HandleClick(Eve ntArgs e)
at System.Windows.Forms.ToolStripItem.HandleMouseUp(M ouseEventArgs e)
at System.Windows.Forms.ToolStripItem.FireEventIntera ctive(EventArgs e, ToolStripItemEventType met)
at System.Windows.Forms.ToolStripItem.FireEvent(Event Args e, ToolStripItemEventType met)
at System.Windows.Forms.ToolStrip.OnMouseUp(MouseEven tArgs mea)
at System.Windows.Forms.ToolStripDropDown.OnMouseUp(M ouseEventArgs mea)
at System.Windows.Forms.Control.WmMouseUp(Message& m, MouseButtons button, Int32 clicks)
at System.Windows.Forms.Control.WndProc(Message& m)
at System.Windows.Forms.ScrollableControl.WndProc(Mes sage& m)
at System.Windows.Forms.ToolStrip.WndProc(Message& m)
at System.Windows.Forms.ToolStripDropDown.WndProc(Mes sage& m)
at System.Windows.Forms.Control.ControlNativeWindow.O nMessage(Message& m)
at System.Windows.Forms.Control.ControlNativeWindow.W ndProc(Message& m)
at System.Windows.Forms.NativeWindow.Callback(IntPtr hWnd, Int32 msg, IntPtr wparam, IntPtr lparam)

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

Line 352 reads:

System.Diagnostics.Process.Start("Sneaky.htm", AppWinStyle.MaximizedFocus)

Maybe I should create the help file in another format instead like pdf.

Any help will be greatly appreciated.

Thanks,
Eddie