mob resist issue

src/engine/objects/Mob.java

@@ -216,7 +216,9 @@ public class Mob extends AbstractIntelligenceAgent {
                     break;
             }
         }
-        switch(mob.mobBase.raceType){
+        int mobbaseID = mob.getMobBaseID();
+        if(mobbaseID != 0) {
+            switch (MobBase.mobbase_race_types.get(mobbaseID)) {
                 case "Aelfborn":
                 case "NPC":
                 case "Rat":
@@ -295,6 +297,7 @@ public class Mob extends AbstractIntelligenceAgent {
                     resists.addResists(Resists.getResists(11));
                     break;
             }
+        }
         mob.mobResists = resists;
     }