Group Manger Problems

So I removed group manager and re installed it and I try to use any of my permissions and I get this on the panel,
>manload
18:14:24 [WARNING] Unexpected exception while parsing console command "manload"
org.bukkit.command.CommandException: Unhandled exception executing command 'manl
oad' in plugin GroupManager v2.0 (2.11.1) (Phoenix)
at org.bukkit.command.PluginCommand.execute(PluginCommand.java:46)
at org.bukkit.command.SimpleCommandMap.dispatch(SimpleCommandMap.java:18
9)
at org.bukkit.craftbukkit.v1_5_R3.CraftServer.dispatchCommand(CraftServe
r.java:523)
at org.bukkit.craftbukkit.v1_5_R3.CraftServer.dispatchServerCommand(Craf
tServer.java:512)
at net.minecraft.server.v1_5_R3.DedicatedServer.an(DedicatedServer.java:
262)
at net.minecraft.server.v1_5_R3.DedicatedServer.r(DedicatedServer.java:2
27)
at net.minecraft.server.v1_5_R3.MinecraftServer.q(MinecraftServer.java:4
77)
at net.minecraft.server.v1_5_R3.MinecraftServer.run(MinecraftServer.java
:410)
at net.minecraft.server.v1_5_R3.ThreadServerApplication.run(SourceFile:5
73)
Caused by: java.lang.NullPointerException
at org.anjocaido.groupmanager.GroupManager.onCommand(GroupManager.java:4
19)
at org.bukkit.command.PluginCommand.execute(PluginCommand.java:44)
Please help!