diff --git a/lib/Privileges.jar b/lib/Privileges.jar
index 561d583..54aea70 100644
Binary files a/lib/Privileges.jar and b/lib/Privileges.jar differ
diff --git a/pom.xml b/pom.xml
index 71ff8de..8906ff3 100644
--- a/pom.xml
+++ b/pom.xml
@@ -23,7 +23,7 @@
 		<dependency>
 			<groupId>net.krinsoft.privileges</groupId>
 			<artifactId>Privileges</artifactId>
-			<version>1.4.0b45</version>
+			<version>1.7b127</version>
 			<scope>system</scope>
 			<systemPath>${project.basedir}/lib/Privileges.jar</systemPath>
 		</dependency>
diff --git a/src/net/milkbowl/vault/permission/plugins/Permission_Privileges.java b/src/net/milkbowl/vault/permission/plugins/Permission_Privileges.java
index 18bb025..323369d 100644
--- a/src/net/milkbowl/vault/permission/plugins/Permission_Privileges.java
+++ b/src/net/milkbowl/vault/permission/plugins/Permission_Privileges.java
@@ -2,12 +2,9 @@ package net.milkbowl.vault.permission.plugins;
 
 import net.krinsoft.privileges.Privileges;
 import net.krinsoft.privileges.groups.Group;
-import net.krinsoft.privileges.groups.GroupManager;
 import net.milkbowl.vault.permission.Permission;
-
 import org.bukkit.Bukkit;
-import org.bukkit.configuration.ConfigurationSection;
-import org.bukkit.configuration.file.FileConfiguration;
+import org.bukkit.OfflinePlayer;
 import org.bukkit.entity.Player;
 import org.bukkit.event.EventHandler;
 import org.bukkit.event.EventPriority;
@@ -16,21 +13,22 @@ import org.bukkit.event.server.PluginDisableEvent;
 import org.bukkit.event.server.PluginEnableEvent;
 import org.bukkit.plugin.Plugin;
 
+import java.util.HashSet;
+import java.util.Set;
+
 public class Permission_Privileges extends Permission {
 
     private final String name = "";
-    private GroupManager perms;
     private Privileges privs;
 
     public Permission_Privileges(Plugin plugin) {
         this.plugin = plugin;
         Bukkit.getServer().getPluginManager().registerEvents(new PermissionServerListener(this), plugin);
         // Load service in case it was loaded before
-        if (perms == null) {
+        if (privs == null) {
             Plugin perms = plugin.getServer().getPluginManager().getPlugin("Privileges");
             if (perms != null && perms.isEnabled()) {
                 this.privs = (Privileges) perms;
-                this.perms = privs.getGroupManager();
                 log.info(String.format("[%s][Permission] %s hooked.", plugin.getDescription().getName(), name));
             }
         }
@@ -45,13 +43,12 @@ public class Permission_Privileges extends Permission {
 
         @EventHandler(priority = EventPriority.MONITOR)
         public void onPluginEnable(PluginEnableEvent event) {
-            if (permission.perms == null) {
+            if (permission.privs == null) {
                 Plugin perms = plugin.getServer().getPluginManager().getPlugin("SimplyPerms");
 
                 if (perms != null) {
                     if (perms.isEnabled()) {
                         permission.privs = (Privileges) perms;
-                        permission.perms = permission.privs.getGroupManager();
                         log.info(String.format("[%s][Permission] %s hooked.", plugin.getDescription().getName(), permission.name));
                     }
                 }
@@ -60,9 +57,8 @@ public class Permission_Privileges extends Permission {
 
         @EventHandler(priority = EventPriority.MONITOR)
         public void onPluginDisable(PluginDisableEvent event) {
-            if (permission.perms != null) {
+            if (permission.privs != null) {
                 if (event.getPlugin().getDescription().getName().equals("SimplyPerms")) {
-                    permission.perms = null;
                     permission.privs = null;
                     log.info(String.format("[%s][Permission] %s un-hooked.", plugin.getDescription().getName(), permission.name));
                 }
@@ -83,7 +79,7 @@ public class Permission_Privileges extends Permission {
     @Override
     public boolean playerHas(String world, String player, String permission) {
         Player p = plugin.getServer().getPlayer(player);
-        return p != null ? p.hasPermission(permission) : false;
+        return p != null && p.hasPermission(permission);
     }
 
     @Override
@@ -100,77 +96,65 @@ public class Permission_Privileges extends Permission {
 
     @Override
     public boolean groupHas(String world, String group, String permission) {
-        ConfigurationSection priv = privs.getGroupNode(group);
-        if (priv == null) {
-            return false;
-        } else {
-            return priv.getBoolean(permission);
-        }
+        Group g = privs.getGroupManager().getGroup(group);
+        return g != null && g.hasPermission(permission, world);
     }
 
     @Override
     public boolean groupAdd(String world, String group, String permission) {
-        throw new UnsupportedOperationException("Privileges does not support modifying permissions.");
+        Group g = privs.getGroupManager().getGroup(group);
+        return g != null && g.addPermission(world, permission);
     }
 
     @Override
     public boolean groupRemove(String world, String group, String permission) {
-        throw new UnsupportedOperationException("Privileges does not support modifying permissions.");
+        Group g = privs.getGroupManager().getGroup(group);
+        return g != null && g.removePermission(world, permission);
     }
 
     @Override
     public boolean playerInGroup(String world, String player, String group) {
-        Player p = Bukkit.getPlayer(player);
-        if (p == null) {
-            throw new UnsupportedOperationException("Privileges does not support offline players.");
-        }
-        Group g = perms.getGroup(p);
-        return g != null && g.getName().equalsIgnoreCase(group);
+        OfflinePlayer p = Bukkit.getOfflinePlayer(player);
+        Group g = privs.getGroupManager().getGroup(p);
+        return g != null && g.getGroupTree().contains(group);
     }
 
     @Override
     public boolean playerAddGroup(String world, String player, String group) {
-        if (world != null) {
-            return false;
-        }
-        perms.setGroup(player, group);
+        privs.getGroupManager().setGroup(player, group);
         return true;
     }
 
     @Override
     public boolean playerRemoveGroup(String world, String player, String group) {
-        Group g = perms.getDefaultGroup();
-        if (g == null) {
-            return false;
-        }
-        return playerAddGroup(world, player, g.getName());
+        Group g = privs.getGroupManager().getDefaultGroup();
+        return g != null && playerAddGroup(world, player, g.getName());
     }
 
     @Override
     public String[] getPlayerGroups(String world, String player) {
-        Player p = Bukkit.getPlayer(player);
+        OfflinePlayer p = Bukkit.getOfflinePlayer(player);
         if (p == null) {
             throw new UnsupportedOperationException("Privileges does not support offline players.");
         }
-        Group g = perms.getGroup(p);
-        return g != null ? new String[] { g.getName() } : null;
+        Group g = privs.getGroupManager().getGroup(p);
+        return g != null ? g.getGroupTree().toArray(new String[g.getGroupTree().size()]) : null;
     }
 
     @Override
     public String getPrimaryGroup(String world, String player) {
-        Player p = Bukkit.getPlayer(player);
-        if (p == null) {
-            throw new UnsupportedOperationException("Privileges does not support offline players.");
-        }
-        Group g = perms.getGroup(p);
+        OfflinePlayer p = Bukkit.getOfflinePlayer(player);
+        Group g = privs.getGroupManager().getGroup(p);
         return g != null ? g.getName() : null;
     }
 
     @Override
     public String[] getGroups() {
-        FileConfiguration file = privs.getGroups();
-        ConfigurationSection groups = file.getConfigurationSection("groups");
-        return groups != null ? groups.getKeys(false).toArray(new String[0]) : null;
+        Set<String> groups = new HashSet<String>();
+        for (Group g : privs.getGroupManager().getGroups()) {
+            groups.add(g.getName());
+        }
+        return groups.toArray(new String[groups.size()]);
     }
 
     @Override