What's wrong with this config.yml file?

Apparently Mob Arena isn't loading up because of an error in the config.yml file. I dont see anything wrong with it however. Please help!

Code:

# MobArena v0.95.2 - Config-file
# Read the Wiki for details on how to set up this file: http://goo.gl/F5TTc
# Note: You -must- use spaces instead of tabs!
global-settings:
    enabled: true
classes: {}
arenas:
    default:
        settings:
            world: factionsworld
        waves:
          'recurrent:
                def1:
                    type: default
                    priority: 1
                    frequency: 1
                    monsters:
                        zombies: 10
                        skeletons: 4
                        exploding_sheep: 5
                def2:
                    type: default
                    priority: 2
                    frequency: 1
                    wave: 5
                    monsters:
                        zombies: 10
                        skeletons: 6
                        creepers: 4
                spec1:
                    type: special
                    priority: 5
                    frequency: 4
                    wave: 4
                    monsters:
                        powered_creepers: 10
                        angry_wolves: 10
                        zombie_pigmen: 10
                upgrade1:
                    type: upgrade
                    priority: 7
                    frequency: 10
                    wave: 10
                    upgrades:
                        all: potion:8197:2
                        Archer: arrow:64
                        Oddjob: tnt:2, netherrack
                    give-all-items: true'
            single:
                swarm1:
                    type: swarm
                    wave: 7
                    monster: slimes
                    amount: medium
                boss1:
                    type: boss
                    wave: 9
                    monster: spider
                    health: medium
                    abilities: fire-aura, disorient-target, fireballs, throw-nearby
                    ability-interval: 5
                boss2:
                    type: boss
                    wave: 13
                    monster: zombie_pigman
                    health: high
                    abilities: root-target, arrows, fetch-distant, fire-aura
                upgrade2:
                    type: upgrade
                    wave: 14
                    upgrades:
                        all: potion:8197:2
                        Knight:
                            armor: diamond_helmet
                            items: diamond_sword 16:2;19:1
                        Tank:
                            items: iron_sword 19:3
                        Oddjob:
                            armor: iron_chestplate, iron_leggings
                        Wizard:
                            permissions:
                            - magicspells.cast.ChainLightning
                    give-all-items: true
                boss3:
                    type: boss
                    wave: 16
                    monster: wolf
                    health: psycho
                    abilities: warp-to-player, fire-aura, throw-nearby, fireballs, fetch-target, arrows
                    ability-interval: 1
                    reward: diamond_chestplate
                supply1:
                    type: supply
                    wave: 19
                    monsters:
                        cows: 10
                        pigs: 5
                    drops: grilled_pork, cooked_chicken, cooked_beef, cooked_fish:2
        rewards:
            waves:
                every:
                    '3': feather, bone, stick
                    '5': dirt:4, gravel:4, stone:4
                    '10': iron_ingot:10, gold_ingot:8
                after:
                    '7': minecart, storage_minecart, powered_minecart
                    '13': iron_sword, iron_pickaxe, iron_spade
                    '16': diamond_sword
        coords:
            p1: 68,61,-910,304.73535,-14.004483
            p2: 119,117,-860,133.13617,70.48456
            lobby: 92,108,-885,89.27307,-1.1251243
            spectator: 92,108,-885,89.27307,-1.1251243
            spawnpoints:
                one: 92,82,-901,-0.09537194,1.3027309
                two: 108,82,-884,89.78436,-0.6395672
                three: 92,82,-868,180.13167,-0.9632383
                four: 76,82,-884,270.8521,-0.1539932

Thanks in advance, whoever fixes this problem!

 

Try this one. The line that begins with 'recurrent' had a single quote and was missing a couple of spaces. Once that was fixed, it passed right through the online YAML parser.