Bukkit

Describe to us the issue that you're having:
Error on examplefiles creation... not sure how it affects the plugin

Which steps will reproduce this problem?:
1) Install plugin
2) p examplefiles in console

Do you have an error log of what happened?
[bPermissions] Created example files!
[09:44:54 INFO]: Adding to example files...
[09:44:54 WARN]: java.util.ConcurrentModificationException
[09:44:54 WARN]:        at java.util.HashMap$HashIterator.nextNode(HashMap.java:
1429)
[09:44:54 WARN]:        at java.util.HashMap$KeyIterator.next(HashMap.java:1453)
[09:44:54 WARN]:        at de.bananaco.bpermissions.api.PermissionCarrier.getPer
missionsAsString(PermissionCarrier.java:76)
[09:44:54 WARN]:        at de.bananaco.bpermissions.api.PermissionCarrier.serial
isePermissions(PermissionCarrier.java:92)
[09:44:54 WARN]:        at de.bananaco.bpermissions.imp.YamlWorld.saveUnsafe(Yam
lWorld.java:335)
[09:44:54 WARN]:        at de.bananaco.bpermissions.imp.YamlWorld$2.run(YamlWorl
d.java:247)
[09:44:54 WARN]:        at de.bananaco.bpermissions.util.loadmanager.MainThread.
check(MainThread.java:54)
[09:44:54 WARN]:        at de.bananaco.bpermissions.util.loadmanager.MainThread.
run(MainThread.java:26)
[09:44:54 WARN]: java.util.ConcurrentModificationException
[09:44:54 WARN]:        at java.util.HashMap$HashIterator.nextNode(HashMap.java:
1429)
[09:44:54 WARN]:        at java.util.HashMap$KeyIterator.next(HashMap.java:1453)
[09:44:54 WARN]:        at de.bananaco.bpermissions.api.PermissionCarrier.getPer
missionsAsString(PermissionCarrier.java:76)
[09:44:54 WARN]:        at de.bananaco.bpermissions.api.PermissionCarrier.serial
isePermissions(PermissionCarrier.java:92)
[09:44:54 WARN]:        at de.bananaco.bpermissions.imp.YamlWorld.saveUnsafe(Yam
lWorld.java:335)
[09:44:54 WARN]:        at de.bananaco.bpermissions.imp.YamlWorld$2.run(YamlWorl
d.java:247)
[09:44:54 WARN]:        at de.bananaco.bpermissions.util.loadmanager.MainThread.
check(MainThread.java:54)
[09:44:54 WARN]:        at de.bananaco.bpermissions.util.loadmanager.MainThread.
run(MainThread.java:26)
[09:44:54 WARN]: java.util.ConcurrentModificationException
[09:44:54 WARN]:        at java.util.HashMap$HashIterator.nextNode(HashMap.java:
1429)
[09:44:54 WARN]:        at java.util.HashMap$KeyIterator.next(HashMap.java:1453)
[09:44:54 WARN]:        at de.bananaco.bpermissions.api.PermissionCarrier.getPer
missionsAsString(PermissionCarrier.java:76)
[09:44:54 WARN]:        at de.bananaco.bpermissions.api.PermissionCarrier.serial
isePermissions(PermissionCarrier.java:92)
[09:44:54 WARN]:        at de.bananaco.bpermissions.imp.YamlWorld.saveUnsafe(Yam
lWorld.java:335)
[09:44:54 WARN]:        at de.bananaco.bpermissions.imp.YamlWorld$2.run(YamlWorl
d.java:247)
[09:44:54 WARN]:        at de.bananaco.bpermissions.util.loadmanager.MainThread.
check(MainThread.java:54)
[09:44:54 WARN]:        at de.bananaco.bpermissions.util.loadmanager.MainThread.

Which version of bPermissions are you using?: (Please don't say "latest"!!!)
2.12 beta19
Which version of CraftBukkit?: (Please don't say "latest"!!!)
spigot 1.10
Which OS?
Ubuntu server 14.04
Any other information we may need (plugins, configs, etc):
No changes made the the plugin in any way