JIT debugging - Total War - Mod Manager

Hello all, my first post here! I'll keep it simple, I got Rome Total War 2 and want to install a mod but whenever I start the manager is gives me an error message:

Vallue cannot be null.
Parameter name: path1.

And if you expand the details in says:

See the end of this message for details on invoking
just-in-time (JIT) debugging instead of this dialog box.


************** Exception Text **************
System.ArgumentNullException: Value cannot be null.
Parameter name: path1
at System.IO.Path.Combine(String path1, String path2)
at TWModManager.Game.GetGameDirectory()
at TWModManager.FormMain.FormMain_Load(Object sender, EventArgs e)
at System.Windows.Forms.Form.OnLoad(EventArgs e)
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.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: 2.0.50727.8670 (QFE.050727-8600)
CodeBase: file:///C:/Windows/Microsoft.NET/Framework64/v2.0.50727/mscorlib.dll
--------------
TWModManager
Assembly Version: 2.0.0.0
Win32 Version: 2.0.0.0
CodeBase: file:///C:/Program%20Files%20(x86)/Total%20War%20Rome%20II/ModManager.exe
--------------
System.Windows.Forms
Assembly Version: 2.0.0.0
Win32 Version: 2.0.50727.8670 (QFE.050727-8600)
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: 2.0.50727.8670 (QFE.050727-8600)
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: 2.0.50727.8670 (QFE.050727-8600)
CodeBase: file:///C:/Windows/assembly/GAC_MSIL/System.Drawing/2.0.0.0__b03f5f7f11d50a3a/System.Drawing.dll
--------------
Accessibility
Assembly Version: 2.0.0.0
Win32 Version: 2.0.50727.8670 (QFE.050727-8600)
CodeBase: file:///C:/Windows/assembly/GAC_MSIL/Accessibility/2.0.0.0__b03f5f7f11d50a3a/Accessibility.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.

I dont know what the problem is because before I did a total reset on my laptop it worked fine!

No one knows something about this error code?