SMP does not work with tekkit?

[stormchase]

I have tried running the normal launcher for the server but when I try to spawn something off TMI it says no block id with ---

If I run launch.bat I get:

C:\Users\Simple\Desktop\Tools\server\serv2>java -Xincgc -Xmx1G -jar Tekkit.jar

Aliasing material 1 name: stone

Aliasing material 2 name: grass

Aliasing material 3 name: dirt

Aliasing material 4 name: stonebrick

Aliasing material 5 name: wood

Aliasing material 6 name: sapling

Aliasing material 7 name: bedrock

Aliasing material 8 name: water

Aliasing material 9 name: water

Aliasing material 10 name: lava

Aliasing material 11 name: lava

Aliasing material 12 name: sand

Aliasing material 13 name: gravel

Aliasing material 14 name: oreGold

Aliasing material 15 name: oreIron

Aliasing material 16 name: oreCoal

Aliasing material 17 name: log

Aliasing material 18 name: leaves

Aliasing material 19 name: sponge

Aliasing material 20 name: glass

Aliasing material 21 name: oreLapis

Aliasing material 22 name: blockLapis

Aliasing material 23 name: dispenser

Aliasing material 24 name: sandStone

Aliasing material 25 name: musicBlock

Aliasing material 26 name: bed

Aliasing material 27 name: goldenRail

Aliasing material 28 name: detectorRail

Aliasing material 29 name: pistonStickyBase

Aliasing material 30 name: web

Aliasing material 31 name: tallgrass

Aliasing material 32 name: deadbush

Aliasing material 33 name: pistonBase

Aliasing material 35 name: cloth

Aliasing material 37 name: flower

Aliasing material 38 name: rose

Aliasing material 39 name: mushroom

Aliasing material 40 name: mushroom

Aliasing material 41 name: blockGold

Aliasing material 42 name: blockIron

Aliasing material 43 name: stoneSlab

Aliasing material 44 name: stoneSlab

Aliasing material 45 name: brick

Aliasing material 46 name: tnt

Aliasing material 47 name: bookshelf

Aliasing material 48 name: stoneMoss

Aliasing material 49 name: obsidian

Aliasing material 50 name: torch

Aliasing material 51 name: fire

java.lang.UnsupportedClassVersionError: net/minecraft/server/TileEntityMobSpawne

r : Unsupported major.minor version 51.0

at java.lang.ClassLoader.defineClass1(Native Method)

at java.lang.ClassLoader.defineClassCond(Unknown Source)

at java.lang.ClassLoader.defineClass(Unknown Source)

at java.security.SecureClassLoader.defineClass(Unknown Source)

at java.net.URLClassLoader.defineClass(Unknown Source)

at java.net.URLClassLoader.access$000(Unknown Source)

at java.net.URLClassLoader$1.run(Unknown Source)

at java.security.AccessController.doPrivileged(Native Method)

at java.net.URLClassLoader.findClass(Unknown Source)

at java.lang.ClassLoader.loadClass(Unknown Source)

at sun.misc.Launcher$AppClassLoader.loadClass(Unknown Source)

at java.lang.ClassLoader.loadClass(Unknown Source)

at net.minecraft.server.Block.<clinit>(Block.java:79)

at net.minecraft.server.StatisticList.a(SourceFile:117)

at net.minecraft.server.StatisticList.<clinit>(SourceFile:52)

at net.minecraft.server.MinecraftServer.main(MinecraftServer.java:589)

at org.bukkit.craftbukkit.Main.main(Main.java:134)

C:\Users\Simple\Desktop\Tools\server\serv2>pause

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