iam using RB 1.0.1 of craftbukkit, latest bpermission and vault with this plugins : BloodMoon, My Worlds, YABackuP, NoFloatingTrees, HeroChat, Spout, eXPra, TreeAssist, EconXP, WorldEdit, MineScore, StreetLamps, NoCheat, ExpPlugin, CommandBook, CFBanner, OpenInv, WorldGuard, HelperBot, MyWolf, LWC, RealShop2, PreciousStones, RideThaDragon, LogBlock

and i get this error at players login :

[WARNING] Task of 'SimpleClans' generated an exception
java.lang.NullPointerException
at net.milkbowl.vault.chat.plugins.Chat_bPermissions.getPlayerInfoString(Chat_bPermissions.java:260)
at net.milkbowl.vault.chat.plugins.Chat_bPermissions.getPlayerPrefix(Chat_bPermissions.java:112)
at net.milkbowl.vault.chat.Chat.getPlayerPrefix(Chat.java:55)
at net.sacredlabyrinth.phaed.simpleclans.managers.PermissionsManager.getPrefix(PermissionsManager.java:174)
at net.sacredlabyrinth.phaed.simpleclans.managers.ClanManager.updateDisplayName(ClanManager.java:262)
at net.sacredlabyrinth.phaed.simpleclans.listeners.SCPlayerListener$1.run(SCPlayerListener.java:225)
at org.bukkit.craftbukkit.scheduler.CraftScheduler.mainThreadHeartbeat(CraftScheduler.java:137)
at net.minecraft.server.MinecraftServer.w(MinecraftServer.java:493)
at net.minecraft.server.MinecraftServer.run(MinecraftServer.java:425)
at net.minecraft.server.ThreadServerApplication.run(SourceFile:457)

previous builds (before 1.8) works fine with this configuration.

its a problem with bPermissions and Vault. I'll add a thing so if it errors out it falls back to the old way on next ver