fix #273080 - Visible mixer with no score leads to instant crash on s…

…tartup
musescore · Jun 5, 2018 · c6fa1ea · c6fa1ea
1 parent c7fa7c6
commit c6fa1ea
Showing 1 changed file with 3 additions and 0 deletions.
diff --git a/mscore/mixer.cpp b/mscore/mixer.cpp
@@ -390,6 +390,9 @@ void Mixer::midiPrefsChanged(bool showMidiControls)
 
 void MuseScore::showMixer(bool val)
       {
+      if (!cs)
+            return;
+
       QAction* a = getAction("toggle-mixer");
       if (mixer == 0) {
             mixer = new Mixer(this);