Bukkit

Describe to us the issue that you're having:
In my groups.yml, I have group admin set to  have certain permissions, but, when I  check if  they have this  permission, it says they don't. I also have to set the refix manually in-game, even though I have  my group set as admin, and the admin prefix is set to what I set it to manually in-game. And, for some reason, whenever I restart the server, it all disappears.

Which steps will reproduce this problem?:
1) Make the group "admin" in groups.yml for all worlds. Set the prefix to "&5&k_&r&6Admin&r&5&k_&r&5".
2) Set the player's group to "admin" in-game, WITHOUT setting their  prefix in-game.
3) Test the chat.
....

Do you have an error log of what happened?
No error log is generated.

Which version of bPermissions are you using?: (Please don't say "latest"!!!)
v2.10.7c
Which version of CraftBukkit?: (Please don't say "latest"!!!)
1.7.2-RO.2
Which OS?
Fedora on Linux.
Any other information we may need (plugins, configs, etc):
I checked the permission via SteelSecurity plugin. I have a SteelSecurity permission set in the "admin" group, but SteelSecurity says that my  player in that group (who is also oped) doesn't have the permission.

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