diff --git a/Vocaluxe/Lib/Sound/Playback/CPlaybackBase.cs b/Vocaluxe/Lib/Sound/Playback/CPlaybackBase.cs
index 62bbec70..d8f08ffe 100644
--- a/Vocaluxe/Lib/Sound/Playback/CPlaybackBase.cs
+++ b/Vocaluxe/Lib/Sound/Playback/CPlaybackBase.cs
@@ -1,4 +1,4 @@
-#region license
+#region license
 // This file is part of Vocaluxe.
 // 
 // Vocaluxe is free software: you can redistribute it and/or modify
@@ -73,9 +73,12 @@ namespace Vocaluxe.Lib.Sound.Playback
             if (!_Initialized)
                 return;
             float volumeF = volume.Clamp(0, 100) / 100f;
-            foreach (IAudioStream stream in _Streams)
-                if(!stream.IsFading)
-                    stream.VolumeMax = volumeF;
+            lock (_Streams)
+            {
+                foreach (IAudioStream stream in _Streams)
+                    if (!stream.IsFading)
+                        stream.VolumeMax = volumeF;
+            }
             _GlobalVolume = volumeF;
         }
 
@@ -318,4 +321,4 @@ namespace Vocaluxe.Lib.Sound.Playback
             }
         }
     }
-}
\ No newline at end of file
+}
diff --git a/VocaluxeLib/Menu/CNameSelection.cs b/VocaluxeLib/Menu/CNameSelection.cs
index cdae1dd6..98dbff9d 100644
--- a/VocaluxeLib/Menu/CNameSelection.cs
+++ b/VocaluxeLib/Menu/CNameSelection.cs
@@ -1,4 +1,4 @@
-#region license
+#region license
 // This file is part of Vocaluxe.
 // 
 // Vocaluxe is free software: you can redistribute it and/or modify
@@ -272,8 +272,16 @@ namespace VocaluxeLib.Menu
                 //Normal activation
             else if (active)
             {
-                SelectedID = _VisibleProfiles.ElementAt(0);
-                _ActualSelection = 0;
+                if (_VisibleProfiles.Count > 0)
+                {
+                    SelectedID = _VisibleProfiles.ElementAt(0);
+                    _ActualSelection = 0;
+                }
+                else
+                {
+                    SelectedID = Guid.Empty;
+                    _ActualSelection = -1;
+                }
                 _Player = player;
                 _PlayerSelector.Color = CBase.Themes.GetPlayerColor(player);
                 _PlayerSelector.Visible = true;
@@ -497,4 +505,4 @@ namespace VocaluxeLib.Menu
         }
         #endregion ThemeEdit
     }
-}
\ No newline at end of file
+}