diff --git a/apps/openmw/mwbase/windowmanager.hpp b/apps/openmw/mwbase/windowmanager.hpp
index fb35157e8..3e957ef14 100644
--- a/apps/openmw/mwbase/windowmanager.hpp
+++ b/apps/openmw/mwbase/windowmanager.hpp
@@ -240,9 +240,11 @@ namespace MWBase
             /** No guarentee of actually closing the window **/
             virtual void exitCurrentGuiMode() = 0;
 
-            virtual void messageBox (const std::string& message, const std::vector<std::string>& buttons = std::vector<std::string>(), enum MWGui::ShowInDialogueMode showInDialogueMode = MWGui::ShowInDialogueMode_IfPossible) = 0;
+            virtual void messageBox (const std::string& message, enum MWGui::ShowInDialogueMode showInDialogueMode = MWGui::ShowInDialogueMode_IfPossible) = 0;
             virtual void staticMessageBox(const std::string& message) = 0;
             virtual void removeStaticMessageBox() = 0;
+            virtual void interactiveMessageBox (const std::string& message,
+                                                const std::vector<std::string>& buttons = std::vector<std::string>(), bool block=false) = 0;
 
             /// returns the index of the pressed button or -1 if no button was pressed (->MessageBoxmanager->InteractiveMessageBox)
             virtual int readPressedButton() = 0;
diff --git a/apps/openmw/mwdialogue/journalimp.cpp b/apps/openmw/mwdialogue/journalimp.cpp
index 9497347e3..e8d5375e1 100644
--- a/apps/openmw/mwdialogue/journalimp.cpp
+++ b/apps/openmw/mwdialogue/journalimp.cpp
@@ -92,9 +92,7 @@ namespace MWDialogue
 
         quest.addEntry (entry); // we are doing slicing on purpose here
 
-        std::vector<std::string> empty;
-        std::string notification = "#{sJournalEntry}";
-        MWBase::Environment::get().getWindowManager()->messageBox (notification, empty);
+        MWBase::Environment::get().getWindowManager()->messageBox ("#{sJournalEntry}");
     }
 
     void Journal::setJournalIndex (const std::string& id, int index)
diff --git a/apps/openmw/mwgui/messagebox.cpp b/apps/openmw/mwgui/messagebox.cpp
index c45136eb3..9cb778ea2 100644
--- a/apps/openmw/mwgui/messagebox.cpp
+++ b/apps/openmw/mwgui/messagebox.cpp
@@ -146,10 +146,11 @@ namespace MWGui
         return false;
     }
 
-    int MessageBoxManager::readPressedButton ()
+    int MessageBoxManager::readPressedButton (bool reset)
     {
         int pressed = mLastButtonPressed;
-        mLastButtonPressed = -1;
+        if (reset)
+            mLastButtonPressed = -1;
         return pressed;
     }
 
diff --git a/apps/openmw/mwgui/messagebox.hpp b/apps/openmw/mwgui/messagebox.hpp
index 59804e097..48a92c844 100644
--- a/apps/openmw/mwgui/messagebox.hpp
+++ b/apps/openmw/mwgui/messagebox.hpp
@@ -33,7 +33,8 @@ namespace MWGui
 
             bool removeMessageBox (MessageBox *msgbox);
 
-            int readPressedButton ();
+            /// @param reset Reset the pressed button to -1 after reading it.
+            int readPressedButton (bool reset=true);
 
             typedef MyGUI::delegates::CMultiDelegate1<int> EventHandle_Int;
 
diff --git a/apps/openmw/mwgui/windowmanagerimp.cpp b/apps/openmw/mwgui/windowmanagerimp.cpp
index 5d737ec41..077ca4fe3 100644
--- a/apps/openmw/mwgui/windowmanagerimp.cpp
+++ b/apps/openmw/mwgui/windowmanagerimp.cpp
@@ -607,7 +607,7 @@ namespace MWGui
                     // GM_Loading uses a texture of the last rendered frame so everything previously visible will be rendered.
                     mHud->setVisible(false);
                     mToolTips->setVisible(false);
-                    setCursorVisible(false);
+                    setCursorVisible(mMessageBoxManager && mMessageBoxManager->isInteractiveMessageBox());
                     break;
                 default:
                     // Unsupported mode, switch back to game
@@ -805,19 +805,31 @@ namespace MWGui
         }
     }
 
-    void WindowManager::messageBox (const std::string& message, const std::vector<std::string>& buttons, enum MWGui::ShowInDialogueMode showInDialogueMode)
+    void WindowManager::interactiveMessageBox(const std::string &message, const std::vector<std::string> &buttons, bool block)
     {
-        if (buttons.empty()) {
-            /* If there are no buttons, and there is a dialogue window open, messagebox goes to the dialogue window */
-            if (getMode() == GM_Dialogue && showInDialogueMode != MWGui::ShowInDialogueMode_Never) {
-                mDialogueWindow->addMessageBox(MyGUI::LanguageManager::getInstance().replaceTags(message));
-            } else if (showInDialogueMode != MWGui::ShowInDialogueMode_Only) {
-                mMessageBoxManager->createMessageBox(message);
+        mMessageBoxManager->createInteractiveMessageBox(message, buttons);
+        MWBase::Environment::get().getInputManager()->changeInputMode(isGuiMode());
+        updateVisible();
+
+        if (block)
+        {
+            while (mMessageBoxManager->readPressedButton(false) == -1
+                   && !MWBase::Environment::get().getStateManager()->hasQuitRequest())
+            {
+                mMessageBoxManager->onFrame(0.f);
+                MWBase::Environment::get().getInputManager()->update(0, true, false);
+
+                mRendering->getWindow()->update();
             }
-        } else {
-            mMessageBoxManager->createInteractiveMessageBox(message, buttons);
-            MWBase::Environment::get().getInputManager()->changeInputMode(isGuiMode());
-            updateVisible();
+        }
+    }
+
+    void WindowManager::messageBox (const std::string& message, enum MWGui::ShowInDialogueMode showInDialogueMode)
+    {
+        if (getMode() == GM_Dialogue && showInDialogueMode != MWGui::ShowInDialogueMode_Never) {
+            mDialogueWindow->addMessageBox(MyGUI::LanguageManager::getInstance().replaceTags(message));
+        } else if (showInDialogueMode != MWGui::ShowInDialogueMode_Only) {
+            mMessageBoxManager->createMessageBox(message);
         }
     }
 
diff --git a/apps/openmw/mwgui/windowmanagerimp.hpp b/apps/openmw/mwgui/windowmanagerimp.hpp
index 015f200d5..44d5819c2 100644
--- a/apps/openmw/mwgui/windowmanagerimp.hpp
+++ b/apps/openmw/mwgui/windowmanagerimp.hpp
@@ -238,9 +238,12 @@ namespace MWGui
     ///Gracefully attempts to exit the topmost GUI mode
     virtual void exitCurrentGuiMode();
 
-    virtual void messageBox (const std::string& message, const std::vector<std::string>& buttons = std::vector<std::string>(), enum MWGui::ShowInDialogueMode showInDialogueMode = MWGui::ShowInDialogueMode_IfPossible);
+    virtual void messageBox (const std::string& message, enum MWGui::ShowInDialogueMode showInDialogueMode = MWGui::ShowInDialogueMode_IfPossible);
     virtual void staticMessageBox(const std::string& message);
     virtual void removeStaticMessageBox();
+    virtual void interactiveMessageBox (const std::string& message,
+                                        const std::vector<std::string>& buttons = std::vector<std::string>(), bool block=false);
+
     virtual int readPressedButton (); ///< returns the index of the pressed button or -1 if no button was pressed (->MessageBoxmanager->InteractiveMessageBox)
 
     virtual void onFrame (float frameDuration);
diff --git a/apps/openmw/mwinput/inputmanagerimp.cpp b/apps/openmw/mwinput/inputmanagerimp.cpp
index ece189c75..846cce6a2 100644
--- a/apps/openmw/mwinput/inputmanagerimp.cpp
+++ b/apps/openmw/mwinput/inputmanagerimp.cpp
@@ -743,8 +743,7 @@ namespace MWInput
     {
         mEngine.screenshot();
 
-        std::vector<std::string> empty;
-        MWBase::Environment::get().getWindowManager()->messageBox ("Screenshot saved", empty);
+        MWBase::Environment::get().getWindowManager()->messageBox ("Screenshot saved");
     }
 
     void InputManager::toggleInventory()
diff --git a/apps/openmw/mwmechanics/npcstats.cpp b/apps/openmw/mwmechanics/npcstats.cpp
index ec7b232a2..ba01caf95 100644
--- a/apps/openmw/mwmechanics/npcstats.cpp
+++ b/apps/openmw/mwmechanics/npcstats.cpp
@@ -257,18 +257,16 @@ void MWMechanics::NpcStats::increaseSkill(int skillIndex, const ESM::Class &clas
     /// \todo check if character is the player, if levelling is ever implemented for NPCs
     MWBase::Environment::get().getSoundManager ()->playSound ("skillraise", 1, 1);
 
-    std::vector <std::string> noButtons;
-
     std::stringstream message;
     message << boost::format(MWBase::Environment::get().getWindowManager ()->getGameSettingString ("sNotifyMessage39", ""))
                % std::string("#{" + ESM::Skill::sSkillNameIds[skillIndex] + "}")
                % static_cast<int> (base);
-    MWBase::Environment::get().getWindowManager ()->messageBox(message.str(), noButtons, MWGui::ShowInDialogueMode_Never);
+    MWBase::Environment::get().getWindowManager ()->messageBox(message.str(), MWGui::ShowInDialogueMode_Never);
 
     if (mLevelProgress >= gmst.find("iLevelUpTotal")->getInt())
     {
         // levelup is possible now
-        MWBase::Environment::get().getWindowManager ()->messageBox ("#{sLevelUpMsg}", noButtons, MWGui::ShowInDialogueMode_Never);
+        MWBase::Environment::get().getWindowManager ()->messageBox ("#{sLevelUpMsg}", MWGui::ShowInDialogueMode_Never);
     }
 
     getSkill (skillIndex).setBase (base);
diff --git a/apps/openmw/mwrender/animation.cpp b/apps/openmw/mwrender/animation.cpp
index ea40721cb..bf161442e 100644
--- a/apps/openmw/mwrender/animation.cpp
+++ b/apps/openmw/mwrender/animation.cpp
@@ -169,6 +169,9 @@ struct AddGlow
 
         instance->setProperty("env_map", sh::makeProperty(new sh::BooleanValue(true)));
         instance->setProperty("env_map_color", sh::makeProperty(new sh::Vector3(mColor->x, mColor->y, mColor->z)));
+        // Workaround for crash in Ogre (https://bitbucket.org/sinbad/ogre/pull-request/447/fix-shadows-crash-for-textureunitstates/diff)
+        // Remove when the fix is merged
+        instance->getMaterial()->setShadowCasterMaterial("openmw_shadowcaster_noalpha");
     }
 };
 
diff --git a/apps/openmw/mwscript/containerextensions.cpp b/apps/openmw/mwscript/containerextensions.cpp
index 96e30e396..58b1b375b 100644
--- a/apps/openmw/mwscript/containerextensions.cpp
+++ b/apps/openmw/mwscript/containerextensions.cpp
@@ -71,8 +71,7 @@ namespace MWScript
                             msgBox = MyGUI::LanguageManager::getInstance().replaceTags("#{sNotifyMessage61}");
                             msgBox = boost::str(boost::format(msgBox) % count % itemName);
                         }
-                        std::vector <std::string> noButtons;
-                        MWBase::Environment::get().getWindowManager()->messageBox(msgBox, noButtons, MWGui::ShowInDialogueMode_Only);
+                        MWBase::Environment::get().getWindowManager()->messageBox(msgBox, MWGui::ShowInDialogueMode_Only);
                     }
                 }
         };
@@ -143,8 +142,7 @@ namespace MWScript
                             msgBox = MyGUI::LanguageManager::getInstance().replaceTags("#{sNotifyMessage62}");
                             msgBox = boost::str (boost::format(msgBox) % itemName);
                         }
-                        std::vector <std::string> noButtons;
-                        MWBase::Environment::get().getWindowManager()->messageBox(msgBox, noButtons, MWGui::ShowInDialogueMode_Only);
+                        MWBase::Environment::get().getWindowManager()->messageBox(msgBox, MWGui::ShowInDialogueMode_Only);
                     }
                 }
         };
diff --git a/apps/openmw/mwscript/interpretercontext.cpp b/apps/openmw/mwscript/interpretercontext.cpp
index 5d52033a8..5cc4d69b6 100644
--- a/apps/openmw/mwscript/interpretercontext.cpp
+++ b/apps/openmw/mwscript/interpretercontext.cpp
@@ -200,7 +200,10 @@ namespace MWScript
     void InterpreterContext::messageBox (const std::string& message,
         const std::vector<std::string>& buttons)
     {
-        MWBase::Environment::get().getWindowManager()->messageBox (message, buttons);
+        if (buttons.empty())
+            MWBase::Environment::get().getWindowManager()->messageBox (message);
+        else
+            MWBase::Environment::get().getWindowManager()->interactiveMessageBox(message, buttons);
     }
 
     void InterpreterContext::report (const std::string& message)
diff --git a/apps/openmw/mwstate/statemanagerimp.cpp b/apps/openmw/mwstate/statemanagerimp.cpp
index 94b1ab4dc..f756ee42a 100644
--- a/apps/openmw/mwstate/statemanagerimp.cpp
+++ b/apps/openmw/mwstate/statemanagerimp.cpp
@@ -118,7 +118,7 @@ void MWState::StateManager::askLoadRecent()
             std::string message = MWBase::Environment::get().getWindowManager()->getGameSettingString("sLoadLastSaveMsg", tag);
             size_t pos = message.find(tag);
             message.replace(pos, tag.length(), lastSave.mProfile.mDescription);
-            MWBase::Environment::get().getWindowManager()->messageBox(message, buttons);
+            MWBase::Environment::get().getWindowManager()->interactiveMessageBox(message, buttons);
             mAskLoadRecent = true;
         }
     }
@@ -259,7 +259,7 @@ void MWState::StateManager::saveGame (const std::string& description, const Slot
 
         std::vector<std::string> buttons;
         buttons.push_back("#{sOk}");
-        MWBase::Environment::get().getWindowManager()->messageBox(error.str(), buttons);
+        MWBase::Environment::get().getWindowManager()->interactiveMessageBox(error.str(), buttons);
 
         // If no file was written, clean up the slot
         if (slot && !boost::filesystem::exists(slot->mPath))
@@ -353,6 +353,12 @@ void MWState::StateManager::loadGame (const Character *character, const std::str
                     {
                         ESM::SavedGame profile;
                         profile.load(reader);
+                        if (!verifyProfile(profile))
+                        {
+                            cleanup (true);
+                            MWBase::Environment::get().getWindowManager()->pushGuiMode (MWGui::GM_MainMenu);
+                            return;
+                        }
                         mTimePlayed = profile.mTimePlayed;
                     }
                     break;
@@ -459,7 +465,7 @@ void MWState::StateManager::loadGame (const Character *character, const std::str
 
         std::vector<std::string> buttons;
         buttons.push_back("#{sOk}");
-        MWBase::Environment::get().getWindowManager()->messageBox(error.str(), buttons);
+        MWBase::Environment::get().getWindowManager()->interactiveMessageBox(error.str(), buttons);
     }
 }
 
@@ -517,3 +523,30 @@ void MWState::StateManager::update (float duration)
         }
     }
 }
+
+bool MWState::StateManager::verifyProfile(const ESM::SavedGame& profile) const
+{
+    const std::vector<std::string>& selectedContentFiles = MWBase::Environment::get().getWorld()->getContentFiles();
+    bool notFound = false;
+    for (std::vector<std::string>::const_iterator it = profile.mContentFiles.begin();
+         it != profile.mContentFiles.end(); ++it)
+    {
+        if (std::find(selectedContentFiles.begin(), selectedContentFiles.end(), *it)
+                == selectedContentFiles.end())
+        {
+            notFound = true;
+            break;
+        }
+    }
+    if (notFound)
+    {
+        std::vector<std::string> buttons;
+        buttons.push_back("#{sYes}");
+        buttons.push_back("#{sNo}");
+        MWBase::Environment::get().getWindowManager()->interactiveMessageBox("#{sMissingMastersMsg}", buttons, true);
+        int selectedButton = MWBase::Environment::get().getWindowManager()->readPressedButton();
+        if (selectedButton == 1 || selectedButton == -1)
+            return false;
+    }
+    return true;
+}
diff --git a/apps/openmw/mwstate/statemanagerimp.hpp b/apps/openmw/mwstate/statemanagerimp.hpp
index 956a2d73c..37f38f8df 100644
--- a/apps/openmw/mwstate/statemanagerimp.hpp
+++ b/apps/openmw/mwstate/statemanagerimp.hpp
@@ -23,6 +23,8 @@ namespace MWState
 
             void cleanup (bool force = false);
 
+            bool verifyProfile (const ESM::SavedGame& profile) const;
+
             std::map<int, int> buildContentFileIndexMap (const ESM::ESMReader& reader) const;
 
         public:
diff --git a/apps/openmw/mwworld/worldimp.cpp b/apps/openmw/mwworld/worldimp.cpp
index 7dfd41408..5461e8405 100644
--- a/apps/openmw/mwworld/worldimp.cpp
+++ b/apps/openmw/mwworld/worldimp.cpp
@@ -3047,7 +3047,7 @@ namespace MWWorld
 
             std::vector<std::string> buttons;
             buttons.push_back("#{sOk}");
-            MWBase::Environment::get().getWindowManager()->messageBox(message, buttons);
+            MWBase::Environment::get().getWindowManager()->interactiveMessageBox(message, buttons);
         }
     }
 
diff --git a/files/mygui/openmw_interactive_messagebox.layout b/files/mygui/openmw_interactive_messagebox.layout
index a1dbc5aa8..a72bebf3a 100644
--- a/files/mygui/openmw_interactive_messagebox.layout
+++ b/files/mygui/openmw_interactive_messagebox.layout
@@ -1,7 +1,7 @@
 <?xml version="1.0" encoding="UTF-8"?>
 
 <MyGUI type="Layout">
-    <Widget type="Window" skin="MW_Dialog" layer="Windows" position="0 0 500 400" name="_Main">
+    <Widget type="Window" skin="MW_Dialog" layer="MessageBox" position="0 0 500 400" name="_Main">
         <Widget type="EditBox" skin="MW_TextEditClient" position="10 10 490 20" align="Left Top Stretch" name="message">
             <Property key="FontName" value="Default"/>
             <Property key="TextAlign" value="Center"/>
diff --git a/files/mygui/openmw_layers.xml b/files/mygui/openmw_layers.xml
index 38a98d133..50f83aaa2 100644
--- a/files/mygui/openmw_layers.xml
+++ b/files/mygui/openmw_layers.xml
@@ -11,6 +11,7 @@
     <Layer name="Popup" overlapped="true" peek="true"/>
     <Layer name="DragAndDrop" overlapped="false" peek="false"/>
     <Layer name="LoadingScreen" overlapped="false" peek="true"/>
+    <Layer name="MessageBox" overlapped="false" peek="true"/>
     <Layer name="Overlay" overlapped="false" peek="true"/>
     <Layer name="Pointer" overlapped="false" peek="false"/>
 </MyGUI>