diff --git a/src/main/java/net/aufdemrand/denizen/scripts/commands/core/FlagCommand.java b/src/main/java/net/aufdemrand/denizen/scripts/commands/core/FlagCommand.java
index 877fcb9f24..89c9af7dea 100644
--- a/src/main/java/net/aufdemrand/denizen/scripts/commands/core/FlagCommand.java
+++ b/src/main/java/net/aufdemrand/denizen/scripts/commands/core/FlagCommand.java
@@ -97,12 +97,16 @@ else if (flagArgs[1].startsWith("/"))
         scriptEntry.defaultObject("target", scriptEntry.hasPlayer() ? Type.PLAYER : null);
         
         // Sets the official target
-        if (((Type) scriptEntry.getObject("target")).name().matches("^(DENIZEN|NPC)$")
-                && scriptEntry.hasNPC())
+        if (((Type) scriptEntry.getObject("target")).name().matches("^(DENIZEN|NPC)$")) {
+            if (!scriptEntry.hasNPC() || !scriptEntry.getNPC().isValid())
+                throw new InvalidArgumentsException("Invalid NPC specified!");
             scriptEntry.addObject("target", scriptEntry.getNPC().getDenizenEntity());
-        else if (((Type) scriptEntry.getObject("target")).name().matches("^PLAYER$")
-                && scriptEntry.hasPlayer())
+        }
+        else if (((Type) scriptEntry.getObject("target")).name().matches("^PLAYER$")) {
+            if (!scriptEntry.hasPlayer() || !scriptEntry.getPlayer().isValid())
+                throw new InvalidArgumentsException("Invalid player specified!");
             scriptEntry.addObject("target", scriptEntry.getPlayer().getDenizenEntity());
+        }
         else
             scriptEntry.addObject("target", "SERVER");
     }
@@ -129,16 +133,16 @@ public void execute(ScriptEntry scriptEntry) throws CommandExecutionException {
             name = name.split("\\[")[0];
         }
 
-        Flag flag = null;
-
         // Send information to debugger
         dB.report(getName(),
                 aH.debugObj("Name", name)
                         + (index > 0 ? aH.debugObj("Index", String.valueOf(index)) : "")
                         + aH.debugUniqueObj("Action/Value", action.toString(), (value != null ? value : "null"))
                         + (duration.getSeconds() > 0 ? duration.debug() : "")
-                        + aH.debugObj("Target", (target != null ? (target.isNPC() ? target.getNPC() : target.isPlayer() ? target.getPlayer() : "Other") : "Server")));
+                        + aH.debugObj("Target", (target != null ? (target.isNPC() ? target.getNPC() : target.isPlayer() ? target.getPlayer() : target.getType()) : "Server")));
 
+        Flag flag = null;
+        
         // Returns existing flag (if existing), or a new flag if not
         if (target == null)
             flag = denizen.flagManager().getGlobalFlag(name);
@@ -146,10 +150,7 @@ else if (target.isPlayer())
             flag = denizen.flagManager().getPlayerFlag(target.getPlayer().getName(), name);
         else if (target.isNPC())
             flag = denizen.flagManager().getNPCFlag(target.getNPC().getId(), name);
-        else {
-            dB.echoError("Invalid entity specified!");
-            return;
-        }
+
         // Do flagAction
         switch (action) {
             case INCREASE: case DECREASE: case MULTIPLY: case DIVIDE:
diff --git a/src/main/java/net/aufdemrand/denizen/scripts/containers/core/WorldScriptHelper.java b/src/main/java/net/aufdemrand/denizen/scripts/containers/core/WorldScriptHelper.java
index 485493456d..016ffcf793 100644
--- a/src/main/java/net/aufdemrand/denizen/scripts/containers/core/WorldScriptHelper.java
+++ b/src/main/java/net/aufdemrand/denizen/scripts/containers/core/WorldScriptHelper.java
@@ -1603,13 +1603,14 @@ public void serverCommandEvent(ServerCommandEvent event) {
     @EventHandler
     public void vehicleDamage(VehicleDamageEvent event) {
         
-        Entity entity = event.getAttacker();
-        
-        if (entity == null) return;
-        
         Map<String, Object> context = new HashMap<String, Object>();
+        
+        Entity entity = event.getAttacker();
         Vehicle vehicle = event.getVehicle();
         
+        if (entity == null || vehicle == null)
+            return;
+        
         String entityType = entity.getType().name();
         String vehicleType = vehicle.getType().name();
         
@@ -1649,8 +1650,11 @@ public void vehicleDestroy(VehicleDestroyEvent event) {
         
         Entity entity = event.getAttacker();
         Vehicle vehicle = event.getVehicle();
+        
+        if (entity == null || vehicle == null)
+            return;
    
-        String entityType = entity != null ? entity.getType().name() : null;
+        String entityType = entity.getType().name();
         String vehicleType = vehicle.getType().name();
         
         Player player = null;
@@ -1684,6 +1688,9 @@ public void vehicleEnter(VehicleEnterEvent event) {
         Entity entity = event.getEntered();
         Vehicle vehicle = event.getVehicle();
         
+        if (entity == null || vehicle == null)
+            return;
+        
         String entityType = entity.getType().name();
         String vehicleType = vehicle.getType().name();
         
@@ -1718,6 +1725,9 @@ public void vehicleExit(VehicleExitEvent event) {
         Entity entity = event.getExited();
         Vehicle vehicle = event.getVehicle();
         
+        if (entity == null || vehicle == null)
+            return;
+        
         String entityType = entity.getType().name();
         String vehicleType = vehicle.getType().name();