Bukkit

Describe to us the issue that you're having:
When a user logs on, an error spams in console

Which steps will reproduce this problem?:
1) Install bPerms
2) Log in
3) See console
....

Do you have an error log of what happened?
http://dev.bukkit.org/paste/5855/

Which version of bPermissions are you using?: (Please don't say "latest"!!!)
2.9.10

Which version of CraftBukkit?: (Please don't say "latest"!!!)
Spigot build 22

Which OS?
Debian Linux

Any other information we may need (plugins, configs, etc):

I'm running AuthDB and OKB3 for forum integration, and NoLagg. My permissions all work fine, it's just this error. There don't seem to be any visible effects, but I'm not sure.

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