GBPVP2.1.1 and Pex 1.19.5 +

2013-09-29 23:45:21 [SEVERE] Error occurred while enabling GroupBasedPVP v2.1.1 (Is it up to date?)
ru.tehkode.permissions.exceptions.PermissionsNotAvailable: Permissions manager is not accessable. Is the PermissionsEx plugin enabled?
>       at ru.tehkode.permissions.bukkit.PermissionsEx.getPermissionManager(PermissionsEx.java:203)
>       at de.HomerBond005.GroupBasedPVP.GBP.setupPermissions(Unknown Source)
>       at de.HomerBond005.GroupBasedPVP.GBP.onEnable(Unknown Source)
>       at org.bukkit.plugin.java.JavaPlugin.setEnabled(JavaPlugin.java:217)
>       at org.bukkit.plugin.java.JavaPluginLoader.enablePlugin(JavaPluginLoader.java:457)
>       at org.bukkit.plugin.SimplePluginManager.enablePlugin(SimplePluginManager.java:382)
>       at org.bukkit.craftbukkit.v1_6_R3.CraftServer.loadPlugin(CraftServer.java:286)
>       at org.bukkit.craftbukkit.v1_6_R3.CraftServer.enablePlugins(CraftServer.java:268)
>       at net.minecraft.server.v1_6_R3.MinecraftServer.l(MinecraftServer.java:321)
>       at net.minecraft.server.v1_6_R3.MinecraftServer.f(MinecraftServer.java:298)
>       at net.minecraft.server.v1_6_R3.MinecraftServer.a(MinecraftServer.java:258)
>       at net.minecraft.server.v1_6_R3.DedicatedServer.init(DedicatedServer.java:165)
>       at net.minecraft.server.v1_6_R3.MinecraftServer.run(MinecraftServer.java:399)
>       at net.minecraft.server.v1_6_R3.ThreadServerApplication.run(SourceFile:583)