diff -rupN rosegarden-10.04.old/src/base/UrlHash.cpp rosegarden-10.04/src/base/UrlHash.cpp
--- rosegarden-10.04.old/src/base/UrlHash.cpp	2010-04-22 16:43:56.000000000 -0400
+++ rosegarden-10.04/src/base/UrlHash.cpp	2010-04-22 23:02:09.000000000 -0400
@@ -16,10 +16,10 @@
 
 #include <QUrl>
 #include <QHash> // to ensure correct qHash(const QString &) is found
-
+#if QT_VERSION < 0x040700
 unsigned int
 qHash(const QUrl &u)
 {
     return qHash(u.toString());
 }
-
+#endif
diff -rupN rosegarden-10.04.old/src/gui/dialogs/KeySignatureDialog.h rosegarden-10.04/src/gui/dialogs/KeySignatureDialog.h
--- rosegarden-10.04.old/src/gui/dialogs/KeySignatureDialog.h	2010-04-22 16:43:42.000000000 -0400
+++ rosegarden-10.04/src/gui/dialogs/KeySignatureDialog.h	2010-04-22 23:24:30.000000000 -0400
@@ -57,7 +57,7 @@ public:
                        Rosegarden::Key::DefaultKey,
                        bool showApplyToAll = true,
                        bool showConversionOptions = true,
-                       QString explanatoryText = 0);
+                       QString explanatoryText = "");
 
     bool isValid() const;
     ::Rosegarden::Key getKey() const;
diff -rupN rosegarden-10.04.old/src/gui/dialogs/TimeSignatureDialog.h rosegarden-10.04/src/gui/dialogs/TimeSignatureDialog.h
--- rosegarden-10.04.old/src/gui/dialogs/TimeSignatureDialog.h	2010-04-22 16:43:42.000000000 -0400
+++ rosegarden-10.04/src/gui/dialogs/TimeSignatureDialog.h	2010-04-22 23:14:09.000000000 -0400
@@ -49,7 +49,7 @@ public:
                         TimeSignature defaultSig =
                             TimeSignature::DefaultTimeSignature,
                         bool timeEditable = false,
-                        QString explanatoryText = 0);
+                        QString explanatoryText = "");
 
     TimeSignature getTimeSignature() const;