Bukkit

kinda the same as this - but this is of major importance now - http://dev.bukkit.org/server-mods/okb3-renewed/tickets/11-multiple-groups-error/

config file is the same as the one in that ticket:
general:
  enable-whitelist: 'false'
  enable-nickname-syncing: 'false'
  enable-synced-banning: 'false'
  enable-promotion-track: 'true'
  enable-rank-changing: 'true'
  enable-post-count-rewarding: 'false'
configuration:
  forum: xenforo
  prefix: xf_
  use-secondary-group: true
mysql-connection:
  mysql-host: greatman
  mysql-user: greatman
  mysql-password: greatman
  mysql-database-name: greatman
  mysql-port: '1337'
group-mapping:
  default:
    '1': unregistered
    '26': registered
    '17,25': gold
    '17,18,25': gold
    '17,18': gold
    '20,17': platinum
    '17,20': platinum
    '18,17': gold
    '17,2': gold
    '17,19': gold
    '17,26': gold
    '18,25': silver
    '18,2': silver
    '18,19': silver
    '18,26': silver
    '3': admins
    '4': moderator
    '27': helper
    '29': helpergold
    '7': banned
    '17': gold
    '18': silver
    '19': whitelisted
    '20': platinum
    '25': trusted
  worlds:
    exampleworld1:
      '1': ExampleGroup1
      '2': ExampleGroup2
extras:
  whitelist:
    kick-message: This is the message a user will see if their group isn't whitelisted.
    use-as-blacklist: 'false'
    groups:
      '1': 'true'
      '26': 'true'
      '17,25': 'true'
      '17,25': 'true'
      '17,18': 'true'
      '18,17': 'true'
      '17,2': 'true'
      '17,19': 'true'
      '17,26': 'true'
      '18,25': 'true'
      '18,2': 'true'
      '18,19': 'true'
      '18,26': 'true'
      '20,17': 'true'
      '17,20': 'true'
      '3': 'true'
      '4': 'true'
      '7': 'false'
      '17': 'true'
      '18': 'true'
      '19': 'true'
      '20': 'true'
      '25': 'true'
      '27': 'true'
      '29': 'true'
  nickname-syncing:
    nickname-field-in-usertable: nickname_field_user_table
  synced-banning:
    banned-user-forum-rank-id: '0'
    unbanned-user-forum-rank-id: '0'
    ban-message: This is the message a user will see if they are banned.
  promotion-track:
    track: 7|1|26|19|25|18|17|20|27|29|4|3
  rank-changing:
    identifiers:
      '1': unregistered
      '26': registered
      '3': admins
      '4': moderator
      '27': helper
      '29': helpergold
      '7': banned
      '17': gold
      '18': silver
      '19': whitelisted
      '20': platinum
      '25': trusted
  post-count-rewarding:
    post-count-field-in-user-table: message_count
    currency-reward-per-post: '40'

With the most updated version, i get the following errors.
23:16:19 [SEVERE] Error occurred while enabling OKB3 v3.7.0 (Is it up to date?)
java.lang.NumberFormatException: For input string: "17,25"

with 3.6 i got:
2012-04-01 23:03:18 [SEVERE] Error occurred while enabling OKB3 v3.6.0 (Is it up to date?)
java.lang.NumberFormatException: For input string: "17,25"
        at java.lang.NumberFormatException.forInputString(NumberFormatException.java:65)
        at java.lang.Integer.parseInt(Integer.java:492)
        at java.lang.Integer.parseInt(Integer.java:527)
        at me.kalmanolah.okb3.OKConfig.<init>(OKConfig.java:80)
        at me.kalmanolah.okb3.OKmain.onEnable(OKmain.java:60)
        at org.bukkit.plugin.java.JavaPlugin.setEnabled(JavaPlugin.java:215)
        at org.bukkit.plugin.java.JavaPluginLoader.enablePlugin(JavaPluginLoader.java:336)
        at org.bukkit.plugin.SimplePluginManager.enablePlugin(SimplePluginManager.java:381)
        at org.bukkit.craftbukkit.CraftServer.loadPlugin(CraftServer.java:250)
        at org.bukkit.craftbukkit.CraftServer.enablePlugins(CraftServer.java:232)
        at net.minecraft.server.MinecraftServer.t(MinecraftServer.java:371)
        at net.minecraft.server.MinecraftServer.a(MinecraftServer.java:358)
        at net.minecraft.server.MinecraftServer.init(MinecraftServer.java:187)
        at net.minecraft.server.MinecraftServer.run(MinecraftServer.java:422)
        at net.minecraft.server.ThreadServerApplication.run(SourceFile:492)

Please help asap

Need a reply please @greatman321

It is planned to bring back the multi-group feature.

@greatman321: Go

Is there an expected time when you will start working on this ?