throw an exception if default value for a setting is not found

apps/openmw/mwrender/objects.cpp

@@ -106,7 +106,7 @@ void Objects::insertMesh (const MWWorld::Ptr& ptr, const std::string& mesh)
     extents *= insert->getScale();
     float size = std::max(std::max(extents.x, extents.y), extents.z);
 
-    bool small = (size < Settings::Manager::getInt("small object size", "Viewing distance")) && Settings::Manager::getBool("limit small object distance", "Objects");
+    bool small = (size < Settings::Manager::getInt("small object size", "Viewing distance")) && Settings::Manager::getBool("limit small object distance", "Viewing distance");
 
     // do not fade out doors. that will cause holes and look stupid
     if (ptr.getTypeName().find("Door") != std::string::npos)

components/settings/settings.cpp

@@ -75,8 +75,12 @@ const std::string Manager::getString (const std::string& setting, const std::str
     if (mNewSettings.find(std::make_pair(category, setting)) != mNewSettings.end())
         return mNewSettings[std::make_pair(category, setting)];
 
-    std::string defaultval = mDefaultFile.getSetting(setting, category);
-    return mFile.getSetting(setting, category, defaultval);
+    std::string defaultval = mDefaultFile.getSetting(setting, category, "NOTFOUND");
+    std::string val = mFile.getSetting(setting, category, defaultval);
+
+    if (val == "NOTFOUND")
+        throw std::runtime_error("Trying to retrieve a non-existing setting: " + setting + " Make sure the settings-default.cfg file was properly installed.");
+    return val;
 }
 
 const float Manager::getFloat (const std::string& setting, const std::string& category)