using namespace PBD;
using namespace ARDOUR;
-sigc::signal <std::pair<bool, string>, string, string> ElementImporter::Rename;
-sigc::signal <bool, string> ElementImporter::Prompt;
+Signal2<std::pair<bool, string>,string, string> ElementImporter::Rename;
+Signal1 <bool,string> ElementImporter::Prompt;
ElementImporter::ElementImporter (XMLTree const & source, ARDOUR::Session & session) :
source (source),