Don't fail out of saves just because a single player fails.

src/main/java/com/gmail/nossr50/util/player/UserManager.java

@@ -52,8 +52,15 @@ public final class UserManager {
         mcMMO.p.debug("Saving mcMMOPlayers... (" + onlinePlayers.size() + ")");
 
         for (Player player : onlinePlayers) {
+            try
+            {
                 getPlayer(player).getProfile().save();
             }
+            catch (Exception e)
+            {
+                mcMMO.p.getLogger().warning("Could not save mcMMO player data for player: " + player.getName());
+            }
+        }
     }
 
     public static Collection<McMMOPlayer> getPlayers() {