Could you please post here the contents of Error.log so that we can get a better picture of what causes the error
Source: System.Drawing
Reason: Parametro non valido.
Stack trace: in System.Drawing.Bitmap..ctor(String filename)
in EasyFPSEditor15.Importers.SystemImporter.ImportFile(String to, String filter)
in EasyFPSEditor15.Importers.SystemImporter.ButtonImportClick(Object sender, EventArgs e)
in System.Windows.Forms.Control.OnClick(EventArgs e)
in System.Windows.Forms.Button.OnClick(EventArgs e)
in System.Windows.Forms.Button.OnMouseUp(MouseEventArgs mevent)
in System.Windows.Forms.Control.WmMouseUp(Message& m, MouseButtons button, Int32 clicks)
in System.Windows.Forms.Control.WndProc(Message& m)
in System.Windows.Forms.ButtonBase.WndProc(Message& m)
in System.Windows.Forms.Button.WndProc(Message& m)
in System.Windows.Forms.Control.ControlNativeWindow.OnMessage(Message& m)
in System.Windows.Forms.Control.ControlNativeWindow.WndProc(Message& m)
in System.Windows.Forms.NativeWindow.Callback(IntPtr hWnd, Int32 msg, IntPtr wparam, IntPtr lparam)