Forge must be protected

src/engine/gameManager/ForgeManager.java

@@ -157,7 +157,13 @@ public enum ForgeManager implements Runnable {
 
         // Forge must be protected in order to access warehouse.
 
-        return workOrder.vendor.building.protectionState.equals(mbEnums.ProtectionState.PROTECTED);
+        if (workOrder.production_cost_total.size() > 1)
+            if (!workOrder.vendor.building.protectionState.equals(mbEnums.ProtectionState.PROTECTED)) {
+                if (playerCharacter != null)
+                    ErrorPopupMsg.sendErrorPopup(playerCharacter, 193);     //193: Production denied: This building must be protected to gain access to warehouse
+            }
+
+        return true;
     }
 
     public static long calcRollingDuration(WorkOrder workOrder) {