Unhandled exception when editing configuration

[Seamob]

When editing a configuration and pressing "Save", even without changing anything i get an unhandled exception error:

************** Exception Text **************
System.ArgumentOutOfRangeException: Index and count must refer to a location within the string.
Parameter name: count
at System.String.Remove(Int32 startIndex, Int32 count)
at epexgui.EditForm.ConfigPathToName(String path) in C:\Users\owner\source\repos\epexgui\epexgui\Forms\EditForm.cs:line 65
at epexgui.EditForm.SaveButton_Click(Object sender, EventArgs e) in C:\Users\owner\source\repos\epexgui\epexgui\Forms\EditForm.cs:line 68
at System.Windows.Forms.Control.OnClick(EventArgs e)
at System.Windows.Forms.Button.OnClick(EventArgs e)
at System.Windows.Forms.Button.OnMouseUp(MouseEventArgs mevent)
at System.Windows.Forms.Control.WmMouseUp(Message& m, MouseButtons button, Int32 clicks)
at System.Windows.Forms.Control.WndProc(Message& m)
at System.Windows.Forms.ButtonBase.WndProc(Message& m)
at System.Windows.Forms.Button.WndProc(Message& m)
at System.Windows.Forms.NativeWindow.Callback(IntPtr hWnd, Int32 msg, IntPtr wparam, IntPtr lparam)

I really like this project and hope it's being developed further in the future :)