Cálmate que no es tan grave :P ya he solucionado tu problema, el comando es este, tienes que ponerlo en un command_block, y luego le das energía, el spawner se pondrá sobre el bloque de comando.
COMANDO:
setblock ~ ~1 ~ minecraft:mob_spawner 1 0 {MinSpawnDelay:200s,MaxSpawnDelay:800s,SpawnCount:4s,id:"MobSpawner",RequiredPlayerRange:16s,Delay:175s,MaxNearbyEntities:6s,SpawnRange:4s,SpawnData:{DropChances:[0:0.0f,1:0.0f,2:0.0f,3:0.0f,4:1.0f,],ConversionTime:-1,Attributes:[0:{Name:"generic.maxHealth",Base:20.0d,},1:{Name:"generic.knockbackResistance",Base:0.0d,},2:{Name:"generic.movementSpeed",Base:0.23000000417232513d,},3:{Name:"generic.followRange",Base:35.0d,},4:{Name:"generic.attackDamage",Base:3.0d,},5:{Name:"zombie.spawnReinforcements",Base:0.040759058921623424d,},],UUIDLeast:-7423363495343499530L,Motion:[0:0.0d,1:-0.0784000015258789d,2:0.0d,],Health:20s,HealF:20.0f,ActiveEffects:[0:{Amplifier:3b,Ambient:0b,Duration:149955,Id:8b,ShowParticles:1b,},],Fire:-1s,Invulnerable:0b,DeathTime:0s,CanBreakDoors:0b,AbsorptionAmount:0.0f,Equipment:[0:{},1:{},2:{},3:{},4:{id:"minecraft:mossy_cobblestone",Damage:0s,Count:1b,tag:{display:{Name:"DonBloque",},},},],OnGround:1b,HurtTime:0s,UUIDMost:-4886484558468068067L,HurtByTimestamp:0,Dimension:0,Air:300s,CanPickUpLoot:1b,Pos:[0:-1655.3406356606565d,1:3.0d,2:48.3215284337294d,],PortalCooldown:0,PersistenceRequired:0b,Leashed:0b,FallDistance:0.0f,Rotation:[0:0.0f,1:-26.986034f,],EntityId:"Zombie",},z:48,SpawnPotentials:[0:{Weight:1,Type:"Zombie",Properties:{ConversionTime:-1,DropChances:[0:0.0f,1:0.0f,2:0.0f,3:0.0f,4:1.0f,],UUIDLeast:-7423363495343499530L,Attributes:[0:{Name:"generic.maxHealth",Base:20.0d,},1:{Name:"generic.knockbackResistance",Base:0.0d,},2:{Name:"generic.movementSpeed",Base:0.23000000417232513d,},3:{Name:"generic.followRange",Base:35.0d,},4:{Name:"generic.attackDamage",Base:3.0d,},5:{Name:"zombie.spawnReinforcements",Base:0.040759058921623424d,},],Equipment:[0:{},1:{},2:{},3:{},4:{id:"minecraft:mossy_cobblestone",Damage:0s,Count:1b,tag:{display:{Name:"DonBloque",},},},],AbsorptionAmount:0.0f,CanBreakDoors:0b,Motion:[0:0.0d,1:-0.0784000015258789d,2:0.0d,],HurtTime:0s,OnGround:1b,UUIDMost:-4886484558468068067L,HurtByTimestamp:0,Dimension:0,Health:20s,Air:300s,HealF:20.0f,CanPickUpLoot:1b,Pos:[0:-1655.3406356606565d,1:3.0d,2:48.3215284337294d,],ActiveEffects:[0:{Amplifier:3b,Ambient:0b,Duration:149955,Id:8b,ShowParticles:1b,},],PortalCooldown:0,PersistenceRequired:0b,Fire:-1s,Leashed:0b,FallDistance:0.0f,Rotation:[0:0.0f,1:-26.986034f,],Invulnerable:0b,EntityId:"Zombie",DeathTime:0s,},},],EntityId:"Zombie"}
Si te ha servido no olvides dejarme un wendingo, hará que mi esfuerzo por ayudarte haya valido la pena  
Un saludo.

Bueno gracias por perder su tiempo xd pero el mcedit no me anda (Tengo dos Computadoras )  y lo que puso LOL_600 no me sirvio,pero igual ya lo aregle igual gracias
-SALUDOS!