See upstream bug report: http://bugs.scribus.net/view.php?id=13102

scribus/sclayer.cpp | 1 +
 1 file changed, 1 insertion(+)

diff --git a/scribus/sclayer.cpp b/scribus/sclayer.cpp
index 502112b..4da7bd5 100644
--- a/scribus/sclayer.cpp
+++ b/scribus/sclayer.cpp
@@ -9,6 +9,7 @@ for which a new license (GPL+exception) is in place.
 
 #include <QHash>   //necessary to avoid msvc warnings induced by SCRIBUS_API on ScLayers + early instanciation of templates
 #include <QVector> //necessary to avoid msvc warnings induced by SCRIBUS_API on ScLayers + early instanciation of templates
+#include <QObject>
 #include <QtAlgorithms>
 
 ScLayer::ScLayer(void)