Fix crash in case of invalid kart types (e.g. 'default', which the

exporter actually writes if 'default' is selected).

src/config/stk_config.hpp

@@ -178,9 +178,17 @@ public:
     const KartProperties &
          getDefaultKartProperties() const {return *m_default_kart_properties; }
 
-    const KartProperties &
-         getKartProperties(std::string type) { return *m_kart_properties[type]; }
+    // ------------------------------------------------------------------------
+    /** Returns the kart properties for a certain type of kart.
+     *  \throw out_of_range if there is no data for 'type'.
+     *  \param type Type of kart (e.g. heavy, medium, ...).
+     */
+    const KartProperties& getKartProperties(std::string type)
+    {
+        return *m_kart_properties.at(type); 
+    }   // getKartProperties
 
+    // ------------------------------------------------------------------------
     const PlayerDifficulty * getPlayerDifficulty(PerPlayerDifficulty difficulty)
         { return m_player_difficulties[difficulty]; }
 }

src/karts/kart_properties.cpp

@@ -178,8 +178,19 @@ void KartProperties::load(const std::string &filename, const std::string &node)
 
     const XMLNode* root = new XMLNode(filename);
     std::string kart_type;
+
     if (root->get("type", &kart_type))
-        copyFrom(&stk_config->getKartProperties(kart_type));
+    {
+        // Handle the case that kart_type might be incorrect
+        try
+        {
+            copyFrom(&stk_config->getKartProperties(kart_type));
+        }
+        catch (std::out_of_range)
+        {
+            copyFrom(&stk_config->getDefaultKartProperties());
+        }   // try .. catch
+    }
     else
         copyFrom(&stk_config->getDefaultKartProperties());