Fix: theme videos are not longer optional

Output/RequiredSkinElements.xml

@@ -18,9 +18,7 @@
 		Minus
 		RepeatIcon
 	</Textures>
-	<Videos>
-		BG_Video
-	</Videos>
+	<Videos></Videos>
 	<Colors>
 		Player1
 		Player2

Vocaluxe/Base/CVideoPlayer.cs

@@ -41,6 +41,10 @@ namespace Vocaluxe.Base
         public void Load(string videoName)
         {
             _VideoStream = CThemes.GetSkinVideo(videoName, -1, false);
+            if (_VideoStream == null)
+            {
+                return;
+            }
             _Loaded = true;
             CVideo.Pause(_VideoStream);
         }
@@ -68,6 +72,11 @@ namespace Vocaluxe.Base
 
         public void Draw()
         {
+            if (!_Loaded)
+            {
+                return;
+            }
+
             if (!_Finished)
             {
                 float videoTime = _VideoTimer.ElapsedMilliseconds / 1000f;
@@ -83,6 +92,10 @@ namespace Vocaluxe.Base
 
         public void PreLoad()
         {
+            if (!_Loaded)
+            {
+                return;
+            }
             bool paused = _VideoTimer.IsRunning;
             if (paused)
                 CVideo.Resume(_VideoStream);

Vocaluxe/Base/ThemeSystem/CSkin.cs

@@ -178,8 +178,8 @@ namespace Vocaluxe.Base.ThemeSystem
                 CVideoSkinElement sk = new CVideoSkinElement {FileName = kvp.Value};
                 if (!File.Exists(Path.Combine(_Folder, sk.FileName)))
                 {
-                    CLog.LogError("Video \"" + kvp.Key + "\": (" + sk.FileName + ") not found!", true);
-                    return false;
+                    CLog.LogError("Video \"" + kvp.Key + "\": (" + sk.FileName + ") not found!");
+                    continue;
                 }
                 _Videos.Add(kvp.Key, sk);
             }

VocaluxeLib/Menu/CBackground.cs

@@ -318,11 +318,15 @@ namespace VocaluxeLib.Menu
 
         private bool _DrawVideo()
         {
-            CBase.Video.GetFrame(_VideoStream, _VideoStream.VideoTime);
-            if (_VideoStream.Texture != null)
+            if (_VideoStream != null)
             {
-                CBase.Drawing.DrawTexture(_VideoStream.Texture, Rect, EAspect.Crop);
-                return true;
+                CBase.Video.GetFrame(_VideoStream, _VideoStream.VideoTime);
+                if (_VideoStream.Texture != null)
+                {
+                    CBase.Drawing.DrawTexture(_VideoStream.Texture, Rect, EAspect.Crop);
+                    return true;
+                }
+                return false;
             }
             return false;
         }