SporeServer: ensure model has blocks in GetArcheTypes()

Author: Rosalie241

SporeServer/Models/Xml/SporeModel.cs

@@ -778,6 +778,12 @@ public static SporeArcheType[] GetArcheTypes(SporeModel model)
             // create list of blocks that the model has
             var blocks = new List<SporeTypes.SporeBlock>();
 
+            // ensure blocks exist
+            if (model.Blocks == null)
+            {
+                return types.ToArray();
+            }
+
             foreach (var block in model.Blocks)
             {
                 var type = block.BlockId[0];