*/
#define S_(x) context_translation(x)
-extern void error_dialog (wxWindow *, wxString);
+extern void error_dialog (wxWindow *, wxString, boost::optional<wxString> e = boost::optional<wxString>());
extern void message_dialog (wxWindow *, wxString);
extern bool confirm_dialog (wxWindow *, wxString);
extern wxStaticText* add_label_to_sizer (wxSizer *, wxWindow *, wxString, bool left, int prop = 0);
extern wxString time_to_timecode (DCPTime t, double fps);
extern void setup_audio_channels_choice (wxChoice* choice, int minimum);
extern wxSplashScreen* maybe_show_splash ();
+extern boost::filesystem::path path_from_file_dialog (wxFileDialog* dialog, std::string extension);
extern void checked_set (FilePickerCtrl* widget, boost::filesystem::path value);
extern void checked_set (wxSpinCtrl* widget, int value);