For those that purchased this fine game, there are some issues as the servers are no longer valid for the game so when you hit settings you get this 
Instant Crash
You will need this fix which also works with kingdoms
Launcher.exe replacement
Download v1.2 (33 KiB)

See the end of this message for details on invoking
just-in-time (JIT) debugging instead of this dialog box.
************** Exception Text **************
System.IndexOutOfRangeException: Index was outside the bounds of the array.
at System.Security.Cryptography.RijndaelManagedTransform.DecryptData(Byte[] inputBuffer, Int32 inputOffset, Int32 inputCount, Byte[]& outputBuffer, Int32 outputOffset, PaddingMode paddingMode, Boolean fLast)
at System.Security.Cryptography.RijndaelManagedTransform.TransformFinalBlock(Byte[] inputBuffer, Int32 inputOffset, Int32 inputCount)
at System.Security.Cryptography.CryptoStream.FlushFinalBlock()
at System.Security.Cryptography.CryptoStream.Dispose(Boolean disposing)
at System.IO.Stream.Close()
at CoreLib.Security.DecryptString(String encString, String phrase, String salt, String initVector)
at UpdateLib.UpdateCore.get_Password()
at Launcher.ConnectionSettingsForm.ConnectionSettingsForm_Load(Object sender, EventArgs e)
at System.Windows.Forms.Form.OnLoad(EventArgs e)
at System.Windows.Forms.Form.OnCreateControl()
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: 2.0.50727.5456 (Win7SP1GDR.050727-5400)
CodeBase: file:///C:/Windows/Microsoft.NET/Framework/v2.0.50727/mscorlib.dll
----------------------------------------
Launcher
Assembly Version: 1.0.2669.20298
Win32 Version: 1.0.2669.20298
CodeBase: file:///C:/Program%20Files%20(x86)/Steam/steamapps/common/Medieval%20II%20Total%20War/launcher.exe
----------------------------------------
System.Windows.Forms
Assembly Version: 2.0.0.0
Win32 Version: 2.0.50727.5456 (Win7SP1GDR.050727-5400)
CodeBase: file:///C:/Windows/assembly/GAC_MSIL/System.Windows.Forms/2.0.0.0__b77a5c561934e089/System.Windows.Forms.dll
----------------------------------------
System
Assembly Version: 2.0.0.0
Win32 Version: 2.0.50727.5456 (Win7SP1GDR.050727-5400)
CodeBase: file:///C:/Windows/assembly/GAC_MSIL/System/2.0.0.0__b77a5c561934e089/System.dll
----------------------------------------
System.Drawing
Assembly Version: 2.0.0.0
Win32 Version: 2.0.50727.5458 (Win7SP1GDR.050727-5400)
CodeBase: file:///C:/Windows/assembly/GAC_MSIL/System.Drawing/2.0.0.0__b03f5f7f11d50a3a/System.Drawing.dll
----------------------------------------
CoreLib
Assembly Version: 1.0.2669.20298
Win32 Version: 1.0.2669.20298
CodeBase: file:///C:/Program%20Files%20(x86)/Steam/steamapps/common/Medieval%20II%20Total%20War/CoreLib.DLL
----------------------------------------
SkinLib
Assembly Version: 1.0.2669.20298
Win32 Version: 1.0.2669.20298
CodeBase: file:///C:/Program%20Files%20(x86)/Steam/steamapps/common/Medieval%20II%20Total%20War/SkinLib.DLL
----------------------------------------
AxInterop.SHDocVw
Assembly Version: 1.1.0.0
Win32 Version: 1.1.0.0
CodeBase: file:///C:/Program%20Files%20(x86)/Steam/steamapps/common/Medieval%20II%20Total%20War/AxInterop.SHDocVw.DLL
----------------------------------------
Interop.SHDocVw
Assembly Version: 1.1.0.0
Win32 Version: 1.1.0.0
CodeBase: file:///C:/Program%20Files%20(x86)/Steam/steamapps/common/Medieval%20II%20Total%20War/Interop.SHDocVw.DLL
----------------------------------------
Accessibility
Assembly Version: 2.0.0.0
Win32 Version: 2.0.50727.4927 (NetFXspW7.050727-4900)
CodeBase: file:///C:/Windows/assembly/GAC_MSIL/Accessibility/2.0.0.0__b03f5f7f11d50a3a/Accessibility.dll
----------------------------------------
UpdateLib
Assembly Version: 1.0.2669.20298
Win32 Version: 1.0.2669.20298
CodeBase: file:///C:/Program%20Files%20(x86)/Steam/steamapps/common/Medieval%20II%20Total%20War/UpdateLib.DLL
----------------------------------------
System.Xml
Assembly Version: 2.0.0.0
Win32 Version: 2.0.50727.5420 (Win7SP1.050727-5400)
CodeBase: file:///C:/Windows/assembly/GAC_MSIL/System.Xml/2.0.0.0__b77a5c561934e089/System.Xml.dll
----------------------------------------
Microsoft.DirectX.AudioVideoPlayback
Assembly Version: 1.0.2902.0
Win32 Version: 5.04.00.2904
CodeBase: file:///C:/Windows/assembly/GAC/Microsoft.DirectX.AudioVideoPlayback/1.0.2902.0__31bf3856ad364e35/Microsoft.DirectX.AudioVideoPlayback.dll
----------------------------------------
Microsoft.DirectX
Assembly Version: 1.0.2902.0
Win32 Version: 5.04.00.2904
CodeBase: file:///C:/Windows/assembly/GAC/Microsoft.DirectX/1.0.2902.0__31bf3856ad364e35/Microsoft.DirectX.dll
----------------------------------------
System.Configuration
Assembly Version: 2.0.0.0
Win32 Version: 2.0.50727.5420 (Win7SP1.050727-5400)
CodeBase: file:///C:/Windows/assembly/GAC_MSIL/System.Configuration/2.0.0.0__b03f5f7f11d50a3a/System.Configuration.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.
Instant Crash
You will need this fix which also works with kingdoms
Launcher.exe replacement
Download v1.2 (33 KiB)