diff --git a/plugins/multimedia/directshow/player/directshowplayerservice.cpp b/plugins/multimedia/directshow/player/directshowplayerservice.cpp
index 4fcf62a..25fa8ed 100644
--- a/plugins/multimedia/directshow/player/directshowplayerservice.cpp
+++ b/plugins/multimedia/directshow/player/directshowplayerservice.cpp
@@ -265,6 +265,10 @@ void DirectShowPlayerService::load(const QMediaContent &media, QIODevice *stream
 
 void DirectShowPlayerService::doSetUrlSource(QMutexLocker *locker)
 {
+    // This can happen in certain error situations.  Return now to avoid a crash.
+    if (!m_graph)
+        return;
+
     IBaseFilter *source = 0;
 
     QMediaResource resource = m_resources.takeFirst();
@@ -441,7 +445,9 @@ void DirectShowPlayerService::doRender(QMutexLocker *locker)
                         locker->unlock();
                         HRESULT hr;
                         if (SUCCEEDED(hr = graph->RenderEx(
-                                pin, /*AM_RENDEREX_RENDERTOEXISTINGRENDERERS*/ 1, 0))) {
+                                pin, 
+                                /*AM_RENDEREX_RENDERTOEXISTINGRENDERERS*/ 1, 
+                                0))) {
                             rendered = true;
                         } else if (renderHr == S_OK || renderHr == VFW_E_NO_DECOMPRESSOR){
                             renderHr = hr;
@@ -493,6 +499,11 @@ void DirectShowPlayerService::doRender(QMutexLocker *locker)
                     m_error = QMediaPlayer::FormatError;
                     m_errorString = QString();
                     break;
+                case VFW_E_CANNOT_RENDER:
+                    m_error = QMediaPlayer::ResourceError;
+                    m_errorString = QString("DirectShowPlayerService::doRender: No combination of filters could be found to render the media stream.");
+                    qWarning() << m_errorString;
+                    break;
                 default:
                     m_error = QMediaPlayer::ResourceError;
                     m_errorString = QString();
diff --git a/plugins/multimedia/directshow/player/directshowvideorenderercontrol.cpp b/plugins/multimedia/directshow/player/directshowvideorenderercontrol.cpp
index 7a8e497..390ca70 100644
--- a/plugins/multimedia/directshow/player/directshowvideorenderercontrol.cpp
+++ b/plugins/multimedia/directshow/player/directshowvideorenderercontrol.cpp
@@ -53,7 +53,8 @@ DirectShowVideoRendererControl::DirectShowVideoRendererControl(DirectShowEventLo
 
 DirectShowVideoRendererControl::~DirectShowVideoRendererControl()
 {
-    delete m_filter;
+    if (m_filter)
+        m_filter->Release();
 }
 
 QAbstractVideoSurface *DirectShowVideoRendererControl::surface() const
diff --git a/plugins/multimedia/directshow/player/videosurfacefilter.cpp b/plugins/multimedia/directshow/player/videosurfacefilter.cpp
index 7d0d105..81ebc40 100644
--- a/plugins/multimedia/directshow/player/videosurfacefilter.cpp
+++ b/plugins/multimedia/directshow/player/videosurfacefilter.cpp
@@ -77,7 +77,7 @@ VideoSurfaceFilter::VideoSurfaceFilter(
 
 VideoSurfaceFilter::~VideoSurfaceFilter()
 {
-    Q_ASSERT(m_ref == 1);
+    Q_ASSERT(m_ref == 0);
 }
 
 HRESULT VideoSurfaceFilter::QueryInterface(REFIID riid, void **ppvObject)
@@ -119,7 +119,9 @@ ULONG VideoSurfaceFilter::Release()
 {
     ULONG ref = InterlockedDecrement(&m_ref);
 
-    Q_ASSERT(ref != 0);
+    if (ref == 0) {
+        delete this;
+    }
 
     return ref;
 }
diff --git a/plugins/sensorgestures/qtsensors/qhoversensorgesturerecognizer.cpp b/plugins/sensorgestures/qtsensors/qhoversensorgesturerecognizer.cpp
index 6fa2042..fffaf80 100644
--- a/plugins/sensorgestures/qtsensors/qhoversensorgesturerecognizer.cpp
+++ b/plugins/sensorgestures/qtsensors/qhoversensorgesturerecognizer.cpp
@@ -118,7 +118,7 @@ void QHoverSensorGestureRecognizer::orientationReadingChanged(QOrientationReadin
 
 void QHoverSensorGestureRecognizer::irProximityReadingChanged(QProximityReading *reading)
 {
-#warning FIXME
+//#warning FIXME  MSVC 2008 does not recognize this directive
 //    reflectance = reading->reflectance();
 //    if (reflectance == 0)
 //        return;