Hi,I'm using Windows Vista Ultimate with all updates, and FSX with Acceleration.I installed Xpax yesterday as Administrator. I also ran it as Administrator, and it seemed to be working fine. No errors.Then I shut down my computer and booted up today, and now Xpax gives me this error when I run it:************** Exception Text **************System.OverflowException: Arithmetic operation resulted in an overflow. at XPax.XPaxEngine.ReadUserFile() at XPax.Options_Control.Options_Control_Load(Object sender, EventArgs e) at System.Windows.Forms.UserControl.OnLoad(EventArgs e) at System.Windows.Forms.UserControl.OnCreateControl() at System.Windows.Forms.Control.CreateControl(Boolean fIgnoreVisible) at System.Windows.Forms.Control.CreateControl(Boolean fIgnoreVisible) at System.Windows.Forms.Control.CreateControl() at System.Windows.Forms.Control.WmShowWindow(Message& m) at System.Windows.Forms.Control.WndProc(Message& m) at System.Windows.Forms.ScrollableControl.WndProc(Message& m) at System.Windows.Forms.ContainerControl.WndProc(Message& m) at System.Windows.Forms.Form.WmShowWindow(Message& m) at System.Windows.Forms.Form.WndProc(Message& m) at System.Windows.Forms.Control.ControlNativeWindow.OnMessage(Message& m) at System.Windows.Forms.Control.ControlNativeWindow.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: 2.0.50727.312 (rtmLHS.050727-3100) CodeBase: file:///C:/Windows/Microsoft.NET/Framework/v2.0.50727/mscorlib.dll----------------------------------------XPax_Engine Assembly Version: 1.0.0.14 Win32 Version: 1.0.0.14 CodeBase: file:///C:/Program%20Files/HiFi/XPax/XPax_Engine.exe----------------------------------------Microsoft.VisualBasic Assembly Version: 8.0.0.0 Win32 Version: 8.0.50727.312 (rtmLHS.050727-3100) CodeBase: file:///C:/Windows/assembly/GAC_MSIL/Microsoft.VisualBasic/8.0.0.0__b03f5f7f11d50a3a/Microsoft.VisualBasic.dll----------------------------------------System Assembly Version: 2.0.0.0 Win32 Version: 2.0.50727.312 (rtmLHS.050727-3100) CodeBase: file:///C:/Windows/assembly/GAC_MSIL/System/2.0.0.0__b77a5c561934e089/System.dll----------------------------------------System.Windows.Forms Assembly Version: 2.0.0.0 Win32 Version: 2.0.50727.312 (rtmLHS.050727-3100) 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: 2.0.50727.312 (rtmLHS.050727-3100) CodeBase: file:///C:/Windows/assembly/GAC_MSIL/System.Drawing/2.0.0.0__b03f5f7f11d50a3a/System.Drawing.dll----------------------------------------System.Runtime.Remoting Assembly Version: 2.0.0.0 Win32 Version: 2.0.50727.312 (rtmLHS.050727-3100) CodeBase: file:///C:/Windows/assembly/GAC_MSIL/System.Runtime.Remoting/2.0.0.0__b77a5c561934e089/System.Runtime.Remoting.dll----------------------------------------XPax Assembly Version: 1.0.0.312 Win32 Version: 1.0.0.312 CodeBase: file:///C:/Program%20Files/HiFi/XPax/XPax.DLL----------------------------------------Interop.Scripting Assembly Version: 1.0.0.0 Win32 Version: 1.0.0.0 CodeBase: file:///C:/Program%20Files/HiFi/XPax/Interop.Scripting.DLL----------------------------------------HiFiSimControls Assembly Version: 1.1.0.1 Win32 Version: 1.1.0.1 CodeBase: file:///C:/Program%20Files/HiFi/XPax/HiFiSimControls.DLL----------------------------------------AxInterop.WMPLib Assembly Version: 1.0.0.0 Win32 Version: 1.0.0.0 CodeBase: file:///C:/Program%20Files/HiFi/XPax/AxInterop.WMPLib.DLL----------------------------------------Interop.WMPLib Assembly Version: 1.0.0.0 Win32 Version: 1.0.0.0 CodeBase: file:///C:/Program%20Files/HiFi/XPax/Interop.WMPLib.DLL----------------------------------------HiFiUtil Assembly Version: 1.0.0.4 Win32 Version: 1.0.0.4 CodeBase: file:///C:/Program%20Files/HiFi/XPax/HiFiUtil.DLL----------------------------------------HiFiLic Assembly Version: 1.0.0.4 Win32 Version: 1.0.0.4 CodeBase: file:///C:/Program%20Files/HiFi/XPax/HiFiLic.DLL----------------------------------------System.DirectoryServices Assembly Version: 2.0.0.0 Win32 Version: 2.0.50727.312 (rtmLHS.050727-3100) CodeBase: file:///C:/Windows/assembly/GAC_MSIL/System.DirectoryServices/2.0.0.0__b03f5f7f11d50a3a/System.DirectoryServices.dll----------------------------------------HiFiSimInterface Assembly Version: 1.0.0.4 Win32 Version: 1.0.0.4 CodeBase: file:///C:/Program%20Files/HiFi/XPax/HiFiSimInterface.DLL----------------------------------------HiFiAircraft Assembly Version: 1.0.0.6 Win32 Version: 1.0.0.6 CodeBase: file:///C:/Program%20Files/HiFi/XPax/HiFiAircraft.DLL----------------------------------------

I did some debugging of my own, and narrowed it down to my name, entered on the Options page, under Pilot in Command.I entered:

Fixed in hotfix 122207. Thanks!