diff --git a/apps/essimporter/importinventory.cpp b/apps/essimporter/importinventory.cpp
index 2c87a9a19..8c7d07f63 100644
--- a/apps/essimporter/importinventory.cpp
+++ b/apps/essimporter/importinventory.cpp
@@ -20,6 +20,7 @@ namespace ESSImport
             item.mId = contItem.mItem.toString();
             item.mCount = contItem.mCount;
             item.mRelativeEquipmentSlot = -1;
+            item.mLockLevel = 0;
 
             unsigned int itemCount = std::abs(item.mCount);
             bool separateStacks = false;
diff --git a/apps/openmw/engine.cpp b/apps/openmw/engine.cpp
index 8b6f9d0b3..bd40dc1ab 100644
--- a/apps/openmw/engine.cpp
+++ b/apps/openmw/engine.cpp
@@ -198,6 +198,7 @@ OMW::Engine::Engine(Files::ConfigurationManager& configurationManager)
   : mWindow(NULL)
   , mEncoding(ToUTF8::WINDOWS_1252)
   , mEncoder(NULL)
+  , mScreenCaptureOperation(nullptr)
   , mSkipMenu (false)
   , mUseSound (true)
   , mCompileAll (false)
diff --git a/apps/openmw/mwgui/container.cpp b/apps/openmw/mwgui/container.cpp
index 9222f1d02..703ba309e 100644
--- a/apps/openmw/mwgui/container.cpp
+++ b/apps/openmw/mwgui/container.cpp
@@ -52,7 +52,7 @@ namespace MWGui
 
     void ContainerWindow::onItemSelected(int index)
     {
-        if (mDragAndDrop->mIsOnDragAndDrop && mModel)
+        if (mDragAndDrop->mIsOnDragAndDrop)
         {
             dropItem();
             return;
@@ -88,6 +88,9 @@ namespace MWGui
 
     void ContainerWindow::dragItem(MyGUI::Widget* sender, int count)
     {
+        if (!mModel)
+            return;
+
         if (!onTakeItem(mModel->getItem(mSelectedItem), count))
             return;
 
@@ -96,6 +99,9 @@ namespace MWGui
 
     void ContainerWindow::dropItem()
     {
+        if (!mModel)
+            return;
+
         bool success = mModel->onDropItem(mDragAndDrop->mItem.mBase, mDragAndDrop->mDraggedCount);
 
         if (success)
@@ -104,7 +110,7 @@ namespace MWGui
 
     void ContainerWindow::onBackgroundSelected()
     {
-        if (mDragAndDrop->mIsOnDragAndDrop && mModel)
+        if (mDragAndDrop->mIsOnDragAndDrop)
             dropItem();
     }
 
diff --git a/apps/openmw/mwgui/loadingscreen.cpp b/apps/openmw/mwgui/loadingscreen.cpp
index 99fe777aa..3df482d68 100644
--- a/apps/openmw/mwgui/loadingscreen.cpp
+++ b/apps/openmw/mwgui/loadingscreen.cpp
@@ -37,6 +37,7 @@ namespace MWGui
         , mLastRenderTime(0.0)
         , mLoadingOnTime(0.0)
         , mImportantLabel(false)
+        , mVisible(false)
         , mProgress(0)
         , mShowWallpaper(true)
     {
diff --git a/apps/openmw/mwgui/quickkeysmenu.cpp b/apps/openmw/mwgui/quickkeysmenu.cpp
index 457bb5588..8041c50c5 100644
--- a/apps/openmw/mwgui/quickkeysmenu.cpp
+++ b/apps/openmw/mwgui/quickkeysmenu.cpp
@@ -161,6 +161,12 @@ namespace MWGui
             }
         }
         assert(index != -1);
+        if (index < 0)
+        {
+            mSelected = nullptr;
+            return;
+        }
+
         mSelected = &mKey[index];
 
         // prevent reallocation of zero key from Type_HandToHand
diff --git a/apps/openmw/mwgui/spellmodel.hpp b/apps/openmw/mwgui/spellmodel.hpp
index 8e29707ae..4aa1f9d2a 100644
--- a/apps/openmw/mwgui/spellmodel.hpp
+++ b/apps/openmw/mwgui/spellmodel.hpp
@@ -26,6 +26,7 @@ namespace MWGui
 
         Spell()
             : mType(Type_Spell)
+            , mCount(0)
             , mSelected(false)
             , mActive(false)
         {
diff --git a/apps/openmw/mwgui/windowmanagerimp.cpp b/apps/openmw/mwgui/windowmanagerimp.cpp
index df2d5ed6d..c97efed34 100644
--- a/apps/openmw/mwgui/windowmanagerimp.cpp
+++ b/apps/openmw/mwgui/windowmanagerimp.cpp
@@ -898,7 +898,8 @@ namespace MWGui
 
         mKeyboardNavigation->onFrame();
 
-        mMessageBoxManager->onFrame(frameDuration);
+        if (mMessageBoxManager)
+            mMessageBoxManager->onFrame(frameDuration);
 
         mToolTips->onFrame(frameDuration);
 
diff --git a/apps/openmw/mwrender/renderingmanager.cpp b/apps/openmw/mwrender/renderingmanager.cpp
index 3dbf6475c..f6aa8796d 100644
--- a/apps/openmw/mwrender/renderingmanager.cpp
+++ b/apps/openmw/mwrender/renderingmanager.cpp
@@ -203,6 +203,7 @@ namespace MWRender
         , mNightEyeFactor(0.f)
         , mDistantFog(false)
         , mDistantTerrain(false)
+        , mFieldOfViewOverridden(false)
         , mFieldOfViewOverride(0.f)
         , mBorders(false)
     {
@@ -691,9 +692,6 @@ namespace MWRender
         int screenshotW = mViewer->getCamera()->getViewport()->width();
         int screenshotH = mViewer->getCamera()->getViewport()->height();
         int screenshotMapping = 0;
-        int cubeSize = screenshotMapping == 2 ?
-            screenshotW:         // planet mapping needs higher resolution
-            screenshotW / 2;    
 
         std::vector<std::string> settingArgs;
         boost::algorithm::split(settingArgs,settingStr,boost::is_any_of(" "));
@@ -717,7 +715,10 @@ namespace MWRender
                 return false;
             }
         }
-    
+
+        // planet mapping needs higher resolution
+        int cubeSize = screenshotMapping == 2 ? screenshotW : screenshotW / 2;
+
         if (settingArgs.size() > 1)
             screenshotW = std::min(10000,std::atoi(settingArgs[1].c_str()));
 
diff --git a/apps/openmw/mwrender/sky.cpp b/apps/openmw/mwrender/sky.cpp
index 2e4329f69..24769019b 100644
--- a/apps/openmw/mwrender/sky.cpp
+++ b/apps/openmw/mwrender/sky.cpp
@@ -1117,6 +1117,7 @@ SkyManager::SkyManager(osg::Group* parentNode, Resource::SceneManager* sceneMana
     , mWindSpeed(0.f)
     , mEnabled(true)
     , mSunEnabled(true)
+    , mWeatherAlpha(0.f)
 {
     osg::ref_ptr<CameraRelativeTransform> skyroot (new CameraRelativeTransform);
     skyroot->setName("Sky Root");
diff --git a/apps/openmw/mwworld/worldimp.cpp b/apps/openmw/mwworld/worldimp.cpp
index c162fd57d..f4c2a75f3 100644
--- a/apps/openmw/mwworld/worldimp.cpp
+++ b/apps/openmw/mwworld/worldimp.cpp
@@ -1180,9 +1180,9 @@ namespace MWWorld
                 addContainerScripts (getPlayerPtr(), newCell);
                 newPtr = getPlayerPtr();
             }
-            else
+            else if (currCell)
             {
-                bool currCellActive = currCell && mWorldScene->isCellActive(*currCell);
+                bool currCellActive = mWorldScene->isCellActive(*currCell);
                 bool newCellActive = newCell && mWorldScene->isCellActive(*newCell);
                 if (!currCellActive && newCellActive)
                 {
diff --git a/components/crashcatcher/crashcatcher.cpp b/components/crashcatcher/crashcatcher.cpp
index e5377b64f..f7b8717a6 100644
--- a/components/crashcatcher/crashcatcher.cpp
+++ b/components/crashcatcher/crashcatcher.cpp
@@ -182,8 +182,10 @@ static void gdb_info(pid_t pid)
         /* Error creating temp file */
         if(fd >= 0)
         {
-            close(fd);
-            remove(respfile);
+            if (close(fd) == 0)
+                remove(respfile);
+            else
+                std::cerr << "Warning: can not close and remove file '" << respfile << "': " << std::strerror(errno) << std::endl;
         }
         printf("!!! Could not create gdb command file\n");
     }
diff --git a/components/esmterrain/storage.cpp b/components/esmterrain/storage.cpp
index ff3123c5b..0f5b17502 100644
--- a/components/esmterrain/storage.cpp
+++ b/components/esmterrain/storage.cpp
@@ -37,6 +37,8 @@ namespace ESMTerrain
     }
 
     LandObject::LandObject(const LandObject &copy, const osg::CopyOp &copyop)
+        : mLand(nullptr)
+        , mLoadFlags(0)
     {
     }
 
diff --git a/extern/oics/tinyxmlparser.cpp b/extern/oics/tinyxmlparser.cpp
index d5bda8fee..c29e263f4 100644
--- a/extern/oics/tinyxmlparser.cpp
+++ b/extern/oics/tinyxmlparser.cpp
@@ -1295,9 +1295,10 @@ const char* TiXmlUnknown::Parse( const char* p, TiXmlParsingData* data, TiXmlEnc
 		++p;
 	}
 
-	if ( !p )
+	if ( !p || !*p )
 	{
-		if ( document )	document->SetError( TIXML_ERROR_PARSING_UNKNOWN, 0, 0, encoding );
+		if ( document ) document->SetError( TIXML_ERROR_PARSING_UNKNOWN, 0, 0, encoding );
+        return 0;
 	}
 	if ( *p == '>' )
 		return p+1;