Maybe use Factions 1.6.9.4 instead of 1.6.9.2 when compiling.
Had that problem too, fixed it like this: import org.bukkit.ChatColor; cSender.sendMessage(ChatColor.WHITE + "------------------------");...
06:01:42 [WARNING] [OtherDrops:2.1.2] Error: unknown entity target (CraftFireball) - please let the developer know. 06:07:06 [WARNING]...
Separate names with a comma.