src/main/java/com/lishid/openinv/ConfigUpdater.java

@@ -1,5 +1,6 @@
 package com.lishid.openinv;
 
+import java.io.File;
 import java.util.HashMap;
 import java.util.Map;
 import java.util.Set;
@@ -32,7 +33,8 @@ public class ConfigUpdater {
         if (isConfigOutdated()) {
             plugin.getLogger().info("[Config] Update found! Performing update...");
             performUpdate();
-        } else {
+        }
+        else {
             plugin.getLogger().info("[Config] Update not required.");
         }
     }
@@ -47,9 +49,19 @@ public class ConfigUpdater {
     }
 
     private void updateConfig1To2() {
-        // Get the old config settings
         FileConfiguration config = plugin.getConfig();
 
+        // Backup the old config file
+        File configFile = new File(plugin.getDataFolder(), "config.yml");
+        File oldConfigFile = new File(plugin.getDataFolder(), "config_old.yml");
+
+        configFile.renameTo(oldConfigFile);
+
+        if (configFile.exists()) {
+            configFile.delete();
+        }
+
+        // Get the old config settings
         int itemOpenInvItemId = config.getInt("ItemOpenInvItemID", 280);
         boolean checkForUpdates = config.getBoolean("CheckForUpdates", true);
         boolean notifySilentChest = config.getBoolean("NotifySilentChest", true);
@@ -73,10 +85,15 @@ public class ConfigUpdater {
 
         // Clear the old config
         for (String key : config.getKeys(false)) {
-            plugin.getConfig().set(key, null);
+            config.set(key, null);
         }
 
         // Set the new config options
+        plugin.saveDefaultConfig();
+        plugin.reloadConfig();
+
+        config = plugin.getConfig(); // Refresh the referenced config
+
         config.set("config-version", "2");
         config.set("check-for-updates", checkForUpdates);
         config.set("items.open-inv", getMaterialById(itemOpenInvItemId).toString());
@@ -111,7 +128,9 @@ public class ConfigUpdater {
 
         ConfigurationSection section = plugin.getConfig().getConfigurationSection(sectionName);
         Set<String> keys = section.getKeys(false);
-        if (keys == null || keys.isEmpty()) return null;
+        if (keys == null || keys.isEmpty()) {
+            return null;
+        }
 
         for (String playerName : keys) {
             UUID uuid = UUIDUtil.getUUIDOf(playerName);
@@ -119,6 +138,9 @@ public class ConfigUpdater {
                 boolean toggled = section.getBoolean(playerName + ".toggle", false);
                 toggles.put(uuid, toggled);
             }
+            else {
+                plugin.getLogger().warning("Failed to retrieve UUID of player: " + playerName);
+            }
         }
 
         return toggles;

src/main/java/com/lishid/openinv/OpenInv.java

@@ -135,7 +135,7 @@ public class OpenInv extends JavaPlugin {
         String itemName = mainPlugin.getConfig().getString("items.open-inv", "STICK");
         Material material = Material.getMaterial(itemName);
         if (material == null) {
-            mainPlugin.getLogger().info("OpenInv item '" + itemName + "' does not match to a valid item. Defaulting to stick.");
+            mainPlugin.getLogger().warning("OpenInv item '" + itemName + "' does not match to a valid item. Defaulting to stick.");
             material = Material.STICK;
         }
 

src/main/java/com/lishid/openinv/utils/UUIDFetcher.java

@@ -44,7 +44,7 @@ public class UUIDFetcher implements Callable<Map<String, UUID>> {
                 String id = (String) jsonProfile.get("id");
                 String name = (String) jsonProfile.get("name");
                 UUID uuid = UUIDFetcher.getUUID(id);
-                uuidMap.put(name, uuid);
+                uuidMap.put(name.toLowerCase(), uuid);
             }
             if (rateLimiting && i != requests - 1) {
                 Thread.sleep(100L);

src/main/java/com/lishid/openinv/utils/UUIDUtil.java

@@ -7,6 +7,7 @@ import java.util.UUID;
 
 import org.apache.commons.lang.Validate;
 import org.bukkit.Bukkit;
+import org.bukkit.OfflinePlayer;
 import org.bukkit.entity.Player;
 
 public class UUIDUtil {
@@ -32,6 +33,7 @@ public class UUIDUtil {
         return found;
     }
 
+    @SuppressWarnings("deprecation")
     public static UUID getUUIDOf(String name) {
         UUID uuid = null;
         Player player = getPlayer(name);
@@ -47,11 +49,21 @@ public class UUIDUtil {
 
             try {
                 response = fetcher.call();
-                uuid = response.get(name);
+                uuid = response.get(name.toLowerCase());
             }
             catch (Exception e) {
+                /*
                 Bukkit.getServer().getLogger().warning("Exception while running UUIDFetcher");
                 e.printStackTrace();
+                */
+                Bukkit.getServer().getLogger().warning("Exception while running UUIDFetcher");
+                // Failed to retrieve with UUIDFetcher, server might be offline?
+                // Fallback on searching for the player via their name
+                OfflinePlayer offlinePlayer = Bukkit.getOfflinePlayer(name);
+
+                if (offlinePlayer != null) {
+                    uuid = offlinePlayer.getUniqueId();
+                }
             }
         }