i have the error right here.

[18:21:36] [server thread/INFO]: Player touched the portal block.  Sending the player to dimension 7

[18:21:36] [server thread/WARN]: Failed to handle packet for

net.minecraft.util.ReportedException: Exception getting block type in world

at net.minecraft.entity.player.EntityPlayerMP.func_71127_g(EntityPlayerMP.java:464) ~[mw.class:?]

at net.minecraft.network.NetHandlerPlayServer.func_147347_a(NetHandlerPlayServer.java:498) ~[nh.class:?]

at net.minecraft.network.play.client.C03PacketPlayer.func_148833_a(C03PacketPlayer.java:36) ~[jd.class:?]

at net.minecraft.network.play.client.C03PacketPlayer$C06PacketPlayerPosLook.func_148833_a(C03PacketPlayer.java:234) ~[jf.class:?]

at net.minecraft.network.NetworkManager.func_74428_b(NetworkManager.java:244) ~[ej.class:?]

at net.minecraft.network.NetworkSystem.func_151269_c(NetworkSystem.java:173) [nc.class:?]

at net.minecraft.server.MinecraftServer.func_71190_q(MinecraftServer.java:980) [MinecraftServer.class:?]

at net.minecraft.server.dedicated.DedicatedServer.func_71190_q(DedicatedServer.java:423) [lt.class:?]

at net.minecraft.server.MinecraftServer.func_71217_p(MinecraftServer.java:798) [MinecraftServer.class:?]

at net.minecraft.server.MinecraftServer.run(MinecraftServer.java:658) [MinecraftServer.class:?]

at java.lang.Thread.run(Thread.java:745) [?:1.8.0_40]

Caused by: java.lang.RuntimeException: Already decorating!!

at net.minecraft.world.biome.BiomeDecorator.func_150512_a(BiomeDecorator.java:106) ~[aia.class:?]

at twilightforest.biomes.TFBiomeDecorator.func_150512_a(TFBiomeDecorator.java:138) ~[TFBiomeDecorator.class:?]

at net.minecraft.world.biome.BiomeGenBase.func_76728_a(BiomeGenBase.java:339) ~[ahu.class:?]

at twilightforest.world.ChunkProviderTwilightForest.func_73153_a(ChunkProviderTwilightForest.java:976) ~[ChunkProviderTwilightForest.class:?]

at net.minecraft.world.gen.ChunkProviderServer.func_73153_a(ChunkProviderServer.java:364) ~[ms.class:?]

at net.minecraft.world.chunk.Chunk.func_76624_a(Chunk.java:1168) ~[apx.class:?]

at net.minecraft.world.gen.ChunkProviderServer.originalLoadChunk(ChunkProviderServer.java:249) ~[ms.class:?]

at net.minecraft.world.gen.ChunkProviderServer.loadChunk(ChunkProviderServer.java:169) ~[ms.class:?]

at net.minecraft.world.gen.ChunkProviderServer.func_73158_c(ChunkProviderServer.java:137) ~[ms.class:?]

at net.minecraft.world.gen.ChunkProviderServer.func_73154_d(ChunkProviderServer.java:260) ~[ms.class:?]

at net.minecraft.world.World.func_72964_e(World.java:739) ~[ahb.class:?]

at net.minecraft.world.World.func_147439_a(World.java:665) ~[ahb.class:?]

at twilightforest.TFTeleporter.isBlockPortal(TFTeleporter.java:200) ~[TFTeleporter.class:?]

at twilightforest.TFTeleporter.func_77184_b(TFTeleporter.java:135) ~[TFTeleporter.class:?]

at twilightforest.TFTeleporter.func_77185_a(TFTeleporter.java:42) ~[TFTeleporter.class:?]

at net.minecraft.server.management.ServerConfigurationManager.transferEntityToWorld(ServerConfigurationManager.java:995) ~[oi.class:?]

at net.minecraft.server.management.ServerConfigurationManager.transferPlayerToDimension(ServerConfigurationManager.java:898) ~[oi.class:?]

at net.minecraft.server.management.ServerConfigurationManager.transferPlayerToDimension(ServerConfigurationManager.java:820) ~[oi.class:?]

at twilightforest.block.BlockTFPortal.func_149670_a(BlockTFPortal.java:327) ~[blockTFPortal.class:?]

at net.minecraft.entity.Entity.func_145775_I(Entity.java:1063) ~[sa.class:?]

at net.minecraft.entity.Entity.func_70091_d(Entity.java:618) ~[sa.class:?]

at micdoodle8.mods.galacticraft.core.entities.player.GCEntityPlayerMP.func_70091_d(GCEntityPlayerMP.java:51) ~[GCEntityPlayerMP.class:?]

at net.minecraft.entity.EntityLivingBase.func_70612_e(EntityLivingBase.java:1751) ~[sv.class:?]

at net.minecraft.entity.player.EntityPlayer.func_70612_e(EntityPlayer.java:1864) ~[yz.class:?]

at net.minecraft.entity.EntityLivingBase.func_70636_d(EntityLivingBase.java:2083) ~[sv.class:?]

at net.minecraft.entity.player.EntityPlayer.func_70636_d(EntityPlayer.java:624) ~[yz.class:?]

at net.minecraft.entity.EntityLivingBase.func_70071_h_(EntityLivingBase.java:1874) ~[sv.class:?]

at net.minecraft.entity.player.EntityPlayer.func_70071_h_(EntityPlayer.java:316) ~[yz.class:?]

at net.minecraft.entity.player.EntityPlayerMP.func_71127_g(EntityPlayerMP.java:393) ~[mw.class:?]

... 10 more

[18:21:36] [server thread/INFO]: atvman36 lost connection: Internal server error

[18:21:36] [server thread/INFO]: atvman36 left the game.

Is there anything anyone can do to help me?

Seems like a conflict between galactic craft and twilight forest, you may wanna talk to them. Best would be Twilight Forest as thats where it's actually reentrying it looks lilke.