still v1.0.1:

- bypassing downgrade issue (unknown flags in regions.yml)

src/de/jaschastarke/minecraft/worldguard/CRegionManager.java

@@ -122,12 +122,14 @@ public class CRegionManager {
                         ConfigurationSection fs = rs.getConfigurationSection("flags");
                         for (Map.Entry<String, Object> data : fs.getValues(false).entrySet()) {
                             Flag<?> flag = FlagList.getFlag(data.getKey());
+                            if (flag != null) {
                                 Object value = flag.unmarshal(data.getValue());
                                 list.add(new FlagValue(flag, value));
                             }
                         }
                     }
                 }
+            }
             return list;
         }
     }