mcMMO is now a lot more compatible with plugins that use scoreboards

Citizens 2 for example

Changelog.txt

@@ -35,6 +35,7 @@ Version 2.1.0
  - (Locale) Removed localizations with the following codes for being almost empty: id, HR_hr, et_EE, lv, lt, no, pl_PL, pt_PT, tr_TR
  - (Config) Removed SkillShot's IncreaseLevel & IncreasePercentage (replaced by RankDamageMultiplier)
  - (Config) Removed AxeMastery's MaxBonus & MaxBonusLevel (replaced by RankDamageMultiplier)
+ = (Plugin Compatibility) mcMMO now uses the main scoreboard instead of creating a new one, this improves plugin compatibility with other plugins (Citizens2, etc...)
  = (Items) Chimaera Wing now tracks cooldowns between sessions for players (no more disconnect abuse)
  = (Skills) Added missing mushroom blocks to experience.yml defaults
  = (Skills) Tridents will no longer be considered unarmed

src/main/java/com/gmail/nossr50/util/scoreboards/ScoreboardWrapper.java

@@ -64,7 +64,7 @@ private ScoreboardWrapper(String playerName, Scoreboard scoreboard) {
     }
 
     public static ScoreboardWrapper create(Player player) {
-        return new ScoreboardWrapper(player.getName(), mcMMO.p.getServer().getScoreboardManager().getNewScoreboard());
+        return new ScoreboardWrapper(player.getName(), mcMMO.p.getServer().getScoreboardManager().getMainScoreboard());
     }
 
     public BukkitTask updateTask = null;