Fall back to default configuration if there is no configuration to be loaded.

QuickPlay/Configuration.cs

@@ -11,8 +11,18 @@ namespace QuickPlay
     sealed class AppConfiguration
     {
         // XXX: All the fields need to be checked in overriden Equals method
-        public readonly string playerConfigUrl;
+        // Also: sensible defaults should be provided in defaultConfiguration field
+        public string playerConfigUrl;
 
+        public static AppConfiguration loadConfiguration()
+        {
+            var cfg = loadSavedConfiguration();
+            if (cfg == null)
+            {
+                cfg = defaultConfiguration;
+            }
+            return cfg;
+        }
         public static AppConfiguration loadSavedConfiguration()
         {
             throw new NotImplementedException();
@@ -28,6 +38,10 @@ namespace QuickPlay
             if (this != newConfig) throw new InvalidDataException("Saved configuration is different from the supplied one.");
         }
 
+        public static AppConfiguration defaultConfiguration = new AppConfiguration
+        {
+            playerConfigUrl = "file:///dev/null",
+        };
         public PlayerConfiguration GetPlayerConfig()
         {
             // TODO: decide sensibly

QuickPlay/MainActivity.cs

@@ -35,7 +35,7 @@ namespace QuickPlay
 
 
             // App initialization
-            appConfig = AppConfiguration.loadSavedConfiguration();
+            appConfig = AppConfiguration.loadConfiguration();
             currentPlayer = appConfig.GetPlayerConfig().GetPlayer();
 
             // UI initialization