--- a/QTfrontend/mapContainer.cpp	Mon Sep 05 15:32:58 2011 -0400
+++ b/QTfrontend/mapContainer.cpp	Mon Sep 05 15:48:46 2011 -0400
@@ -511,6 +511,7 @@
 {
     int i = MAPGEN_MAP + 3 + numMissions + rand() % (chooseMap->count() - MAPGEN_MAP - 3 - numMissions);
     chooseMap->setCurrentIndex(i);
+    updatePreview();
     setRandomSeed();
 }