I can't remove all the lasers in the world, players would definitely not be happy.
Don't pay attention to the internal server error, that doesn't usually happen.
Rest of the log:
2013-11-20 06:00:53 [iNFO] Registered command cofh with permission node cofh.command.CommandHandler
2013-11-20 06:00:53 [iNFO] Registered command ssinvite with permission node micdoodle8.mods.galacticraft.core.command.GCCoreCommandSpaceStationAddOwner
2013-11-20 06:00:53 [iNFO] Registered command ssuninvite with permission node micdoodle8.mods.galacticraft.core.command.GCCoreCommandSpaceStationRemoveOwner
2013-11-20 06:00:53 [iNFO] Registered command buildcraft with permission node buildcraft.core.CommandBuildCraft
2013-11-20 06:00:53 [iNFO] Registered command modflag with permission node universalelectricity.prefab.flag.CommandFlag
2013-11-20 06:00:53 [iNFO] Registered command chunkloaders with permission node codechicken.chunkloader.CommandChunkLoaders
2013-11-20 06:00:53 [iNFO] Registered command ccdebug with permission node codechicken.chunkloader.CommandDebugInfo
2013-11-20 06:00:53 [iNFO] Registered command ee3 with permission node com.pahimar.ee3.command.CommandEE
2013-11-20 06:00:53 [iNFO] Registered command logisticspipes with permission node logisticspipes.commands.LogisticsPipesCommand
2013-11-20 06:00:53 [iNFO] Registered command tpx with permission node com.xcompwiz.mystcraft.command.CommandTPX
2013-11-20 06:00:53 [iNFO] Registered command myst-create with permission node com.xcompwiz.mystcraft.command.CommandCreateDim
2013-11-20 06:00:53 [iNFO] Registered command myst-agebook with permission node com.xcompwiz.mystcraft.command.CommandCreateAgebook
2013-11-20 06:00:53 [iNFO] Registered command myst-toggleworldinstability with permission node com.xcompwiz.mystcraft.command.CommandToggleWorldInstability
2013-11-20 06:00:53 [iNFO] Registered command toggledownfall with permission node com.xcompwiz.mystcraft.command.CommandToggleDownfall
2013-11-20 06:00:53 [iNFO] Registered command time with permission node com.xcompwiz.mystcraft.command.CommandTime
2013-11-20 06:00:53 [iNFO] Registered command myst-permissions with permission node com.xcompwiz.mystcraft.command.CommandMystPermissions
2013-11-20 06:00:53 [iNFO] Registered command myst-regenchunk with permission node com.xcompwiz.mystcraft.command.CommandRegenerateChunk
2013-11-20 06:00:53 [iNFO] Registered command profile with permission node me.nallar.tickprofiler.minecraft.commands.ProfileCommand
2013-11-20 06:00:53 [iNFO] Registered command dump with permission node me.nallar.tickprofiler.minecraft.commands.DumpCommand
2013-11-20 06:00:53 [iNFO] Registered command tps with permission node mods.immibis.core.commands.TPSCommand
2013-11-20 06:00:53 [iNFO] Registered command dimanc with permission node mods.immibis.chunkloader.DimensionalAnchors$1
2013-11-20 06:00:53 [iNFO] Loading NEI
2013-11-20 06:00:53 [iNFO] [server] Remember to visit our Website : http://www.minervasrealm.com
2013-11-20 06:00:53 [WARNING] Wrong location for EntityItem['item.item.dyePowder.black'/299, l='Alpha', x=1665.50, y=72.25, z=16912.18] in world 'Alpha'!
2013-11-20 06:00:53 [WARNING] Entity is at 1665.4999999999998,16912.175000007264 (chunk 104,1057) but was stored in chunk 104,1056
2013-11-20 06:00:54 [WARNING] Wrong location for EntityItem['item.tile.mushroom'/464, l='Alpha', x=15736.06, y=9.13, z=-27680.04] in world 'Alpha'!
2013-11-20 06:00:54 [WARNING] Entity is at 15736.059913796122,-27680.04025454712 (chunk 983,-1731) but was stored in chunk 983,-1730
2013-11-20 06:00:54 [iNFO] [mcMMO] You are using an outdated version of mcMMO!
2013-11-20 06:00:54 [iNFO] [mcMMO] There is a new version available on BukkitDev.
2013-11-20 06:00:54 [WARNING] [Towny] Task #50 for Towny v0.84.0.0 generated an exception
java.lang.NullPointerException
at net.minecraft.world.chunk.Chunk.func_76592_a(Chunk.java:734)
at net.minecraft.world.World.func_72832_d(World.java:764)
at org.bukkit.craftbukkit.v1_5_R3.block.CraftBlock.setTypeIdAndData(CraftBlock.java:126)
at com.palmergames.bukkit.towny.regen.PlotBlockData.restoreNextBlock(Unknown Source)
at com.palmergames.bukkit.towny.tasks.RepeatingTimerTask.run(Unknown Source)
at org.bukkit.craftbukkit.v1_5_R3.scheduler.CraftTask.run(CraftTask.java:58)
at org.bukkit.craftbukkit.v1_5_R3.scheduler.CraftScheduler.mainThreadHeartbeat(CraftScheduler.java:344)
at net.minecraft.server.MinecraftServer.func_71190_q(MinecraftServer.java:777)
at net.minecraft.server.dedicated.DedicatedServer.func_71190_q(DedicatedServer.java:320)
at net.minecraft.server.MinecraftServer.func_71217_p(MinecraftServer.java:732)
at net.minecraft.server.MinecraftServer.run(MinecraftServer.java:614)
at net.minecraft.server.ThreadMinecraftServer.run(SourceFile:573)
2013-11-20 06:00:54 [iNFO] [TownyChat] -******* TownyChat enabled *******-
2013-11-20 06:01:04 [WARNING] Wrong location for EntityItem['item.tile.stonebrick'/3089, l='Alpha', x=-1687.50, y=80.25, z=21007.80] in world 'Alpha'!
2013-11-20 06:01:04 [WARNING] Entity is at -1687.5,21007.79999998212 (chunk -106,1312) but was stored in chunk -106,1313
2013-11-20 06:01:12 [WARNING] [server] The main thread failed to respond after 10 seconds
2013-11-20 06:01:12 [WARNING] [server] What follows is the stack trace of the main thread
2013-11-20 06:01:12 [WARNING] [server] at net.minecraft.world.WorldServer.func_72796_p(WorldServer.java:199)
2013-11-20 06:01:12 [WARNING] [server] at buildcraft.silicon.TileLaser.findTable(TileLaser.java:160)
2013-11-20 06:01:12 [WARNING] [server] at buildcraft.silicon.TileLaser.func_70316_g(TileLaser.java:74)
2013-11-20 06:01:12 [WARNING] [server] at net.minecraft.world.World.func_72939_s(World.java:2368)
2013-11-20 06:01:12 [WARNING] [server] at net.minecraft.world.WorldServer.func_72939_s(WorldServer.java:806)
2013-11-20 06:01:12 [WARNING] [server] at net.minecraft.server.MinecraftServer.func_71190_q(MinecraftServer.java:838)
2013-11-20 06:01:12 [WARNING] [server] at net.minecraft.server.dedicated.DedicatedServer.func_71190_q(DedicatedServer.java:320)
2013-11-20 06:01:12 [WARNING] [server] at net.minecraft.server.MinecraftServer.func_71217_p(MinecraftServer.java:732)
2013-11-20 06:01:12 [WARNING] [server] at net.minecraft.server.MinecraftServer.run(MinecraftServer.java:614)
2013-11-20 06:01:12 [WARNING] [server] at net.minecraft.server.ThreadMinecraftServer.run(SourceFile:573)
2013-11-20 06:01:23 [iNFO] Read timed out
2013-11-20 06:01:24 [WARNING] [server] The main thread is still stuck, current loop line is:
2013-11-20 06:01:24 [WARNING] [server] at net.minecraft.world.World.func_72939_s(World.java:2368)
2013-11-20 06:02:39 [WARNING] [server] The main thread is still stuck, current loop line is:
2013-11-20 06:02:39 [WARNING] [server] at net.minecraft.world.WorldServer.func_72939_s(WorldServer.java:806)
2013-11-20 06:02:43 [iNFO] /127.0.0.1:41493 lost connection
2013-11-20 06:02:43 [iNFO] /79.143.116.5:55010 lost connection
2013-11-20 06:02:43 [iNFO] /86.46.183.54:50985 lost connection
2013-11-20 06:02:43 [iNFO] /86.46.183.54:50999 lost connection
2013-11-20 06:02:43 [iNFO] /86.46.183.54:51017 lost connection
2013-11-20 06:02:43 [iNFO] /86.46.183.54:51028 lost connection
2013-11-20 06:02:43 [iNFO] /173.85.6.240:61976 lost connection
2013-11-20 06:02:43 [iNFO] /86.46.183.54:51062 lost connection
2013-11-20 06:02:43 [iNFO] /173.85.6.240:60089 lost connection
2013-11-20 06:02:43 [iNFO] /86.46.183.54:51077 lost connection
2013-11-20 06:02:43 [iNFO] /67.234.134.199:55507 lost connection
2013-11-20 06:02:43 [iNFO] /79.143.116.5:55043 lost connection
2013-11-20 06:02:43 [iNFO] /67.234.134.199:55509 lost connection
2013-11-20 06:02:43 [iNFO] /86.46.183.54:51085 lost connection
2013-11-20 06:02:45 [iNFO] [FakePlayer] Initializing fake player for buildcraft/core/proxy/CoreProxy$1: [[buildCraft]]
2013-11-20 06:03:06 [iNFO] Royalogic[/173.85.6.240:60563] logged in with entity id 4524 at ([Alpha] -19314.633725575954, 83.0, 22799.468568974058)
2013-11-20 06:03:06 [iNFO] Welcome Back, Royalogic!
2013-11-20 06:03:06 [iNFO] Loading Player: Royalogic
2013-11-20 06:03:06 [iNFO] Sending serverside check to: Royalogic
2013-11-20 06:03:14 [iNFO] /86.46.183.54:51102 lost connection
2013-11-20 06:03:24 [iNFO] /86.46.183.54:51114 lost connection
2013-11-20 06:03:24 [iNFO] /86.46.183.54:51124 lost connection
2013-11-20 06:03:34 [iNFO] /86.46.183.54:51137 lost connection
2013-11-20 06:03:41 [iNFO] [WorldEdit] Using inbuilt NmsBlock for this version.
2013-11-20 06:03:51 [iNFO] Disconnecting Riccardo_Fagiolo [/79.143.116.5:55086]: Internal server error
2013-11-20 06:03:51 [WARNING] Failed to handle packet for Riccardo_Fagiolo [/79.143.116.5:55086]: java.lang.NullPointerException
java.lang.NullPointerException
at net.minecraft.server.management.ServerConfigurationManager.attemptLogin(ServerConfigurationManager.java:436)
at net.minecraft.network.NetLoginHandler.completeConnection(NetLoginHandler.java:205)
at cpw.mods.fml.common.network.FMLNetworkHandler.handleClientConnection(FMLNetworkHandler.java:167)
at cpw.mods.fml.common.network.FMLNetworkHandler.onConnectionReceivedFromClient(FMLNetworkHandler.java:120)
at net.minecraft.network.NetLoginHandler.func_72529_d(NetLoginHandler.java:194)
at net.minecraft.network.NetLoginHandler.func_72532_c(NetLoginHandler.java:81)
at net.minecraft.server.ServerListenThread.func_71766_a(ServerListenThread.java:57)
at net.minecraft.server.dedicated.DedicatedServerListenThread.func_71747_b(SourceFile:29)
at net.minecraft.server.MinecraftServer.func_71190_q(MinecraftServer.java:865)
at net.minecraft.server.dedicated.DedicatedServer.func_71190_q(DedicatedServer.java:320)
at net.minecraft.server.MinecraftServer.func_71217_p(MinecraftServer.java:732)
at net.minecraft.server.MinecraftServer.run(MinecraftServer.java:614)
at net.minecraft.server.ThreadMinecraftServer.run(SourceFile:573)
2013-11-20 06:04:09 [WARNING] [server] The main thread failed to respond after 10 seconds
2013-11-20 06:04:09 [WARNING] [server] What follows is the stack trace of the main thread
2013-11-20 06:04:09 [WARNING] [server] at net.minecraft.world.WorldServer.func_72796_p(WorldServer.java:198)
2013-11-20 06:04:09 [WARNING] [server] at appeng.api.TileRef.getTile(TileRef.java:32)
2013-11-20 06:04:09 [WARNING] [server] at appeng.me.crafting.AssemblerCluster.destroy(AssemblerCluster.java:88)
2013-11-20 06:04:09 [WARNING] [server] at appeng.me.tile.TileAssemblerMB.terminate(TileAssemblerMB.java:71)
2013-11-20 06:04:09 [WARNING] [server] at appeng.common.base.AppEngTile.onChunkUnload(AppEngTile.java:376)
2013-11-20 06:04:09 [WARNING] [server] at net.minecraft.world.World.func_72939_s(World.java:2413)
2013-11-20 06:04:09 [WARNING] [server] at net.minecraft.world.WorldServer.func_72939_s(WorldServer.java:806)
2013-11-20 06:04:09 [WARNING] [server] at net.minecraft.server.MinecraftServer.func_71190_q(MinecraftServer.java:838)
2013-11-20 06:04:09 [WARNING] [server] at net.minecraft.server.dedicated.DedicatedServer.func_71190_q(DedicatedServer.java:320)
2013-11-20 06:04:09 [WARNING] [server] at net.minecraft.server.MinecraftServer.func_71217_p(MinecraftServer.java:732)
2013-11-20 06:04:09 [WARNING] [server] at net.minecraft.server.MinecraftServer.run(MinecraftServer.java:614)
2013-11-20 06:04:09 [WARNING] [server] at net.minecraft.server.ThreadMinecraftServer.run(SourceFile:573)
2013-11-20 06:04:21 [WARNING] [server] The main thread is still stuck, current loop line is:
2013-11-20 06:04:21 [WARNING] [server] at appeng.me.tile.TileAssemblerMB.terminate(TileAssemblerMB.java:71)
2013-11-20 06:04:32 [iNFO] Riccardo_Fagiolo [/79.143.116.5:55119] lost connection
2013-11-20 06:04:32 [iNFO] /86.46.183.54:51147 lost connection
2013-11-20 06:04:32 [iNFO] /128.136.128.5:17746 lost connection
2013-11-20 06:04:32 [iNFO] /79.143.116.5:55128 lost connection
2013-11-20 06:04:32 [iNFO] /78.156.102.20:19542 lost connection
2013-11-20 06:04:32 [iNFO] /173.85.6.240:61698 lost connection
2013-11-20 06:04:32 [iNFO] /37.49.117.19:56533 lost connection
2013-11-20 06:04:32 [iNFO] Royalogic lost connection: disconnect.endOfStream
2013-11-20 06:04:32 [iNFO] §§[§§Builder§§]§§ Royalogic Has Left The Server.
2013-11-20 06:04:33 [WARNING] [server] The main thread is still stuck, current loop line is:
2013-11-20 06:04:33 [WARNING] [server] at net.minecraft.server.dedicated.DedicatedServer.func_71190_q(DedicatedServer.java:320)
2013-11-20 06:04:33 [iNFO] Unloading Player: Royalogic
2013-11-20 06:04:37 [iNFO] [AsyncWorldedit] World edit session not set to AsyncWorldedit. Fixing.
2013-11-20 06:04:37 [iNFO] Accepted EditSessionFactory of type org.primesoft.asyncworldedit.worldedit.AsyncEditSessionFactory from org.primesoft.asyncworldedit.worldedit
2013-11-20 06:04:53 [WARNING] [server] The main thread failed to respond after 10 seconds
2013-11-20 06:04:53 [WARNING] [server] What follows is the stack trace of the main thread
2013-11-20 06:04:53 [WARNING] [server] at net.minecraft.world.WorldServer.func_72796_p(WorldServer.java:198)
2013-11-20 06:04:53 [WARNING] [server] at appeng.api.TileRef.getTile(TileRef.java:32)
2013-11-20 06:04:53 [WARNING] [server] at appeng.me.crafting.AssemblerCluster.destroy(AssemblerCluster.java:89)
2013-11-20 06:04:53 [WARNING] [server] at appeng.me.tile.TileAssemblerMB.terminate(TileAssemblerMB.java:71)
2013-11-20 06:04:53 [WARNING] [server] at appeng.common.base.AppEngTile.onChunkUnload(AppEngTile.java:376)
2013-11-20 06:04:53 [WARNING] [server] at net.minecraft.world.World.func_72939_s(World.java:2413)
2013-11-20 06:04:53 [WARNING] [server] at net.minecraft.world.WorldServer.func_72939_s(WorldServer.java:806)
2013-11-20 06:04:53 [WARNING] [server] at net.minecraft.server.MinecraftServer.func_71190_q(MinecraftServer.java:838)
2013-11-20 06:04:53 [WARNING] [server] at net.minecraft.server.dedicated.DedicatedServer.func_71190_q(DedicatedServer.java:320)
2013-11-20 06:04:53 [WARNING] [server] at net.minecraft.server.MinecraftServer.func_71217_p(MinecraftServer.java:732)
2013-11-20 06:04:53 [WARNING] [server] at net.minecraft.server.MinecraftServer.run(MinecraftServer.java:614)
2013-11-20 06:04:53 [WARNING] [server] at net.minecraft.server.ThreadMinecraftServer.run(SourceFile:573)
2013-11-20 06:05:05 [WARNING] [server] The main thread is still stuck, current loop line is:
2013-11-20 06:05:05 [WARNING] [server] at appeng.me.tile.TileAssemblerMB.terminate(TileAssemblerMB.java:71)
2013-11-20 06:05:33 [WARNING] [server] The main thread is still stuck, current loop line is:
2013-11-20 06:05:33 [WARNING] [server] at net.minecraft.world.WorldServer.func_72939_s(WorldServer.java:806)
2013-11-20 06:05:38 [iNFO] Lagnalok [/37.49.117.19:56535] lost connection
2013-11-20 06:05:38 [iNFO] /79.143.116.5:55178 lost connection
2013-11-20 06:05:38 [iNFO] /79.143.116.5:55187 lost connection
2013-11-20 06:05:38 [iNFO] /173.85.6.240:60035 lost connection
2013-11-20 06:05:38 [iNFO] /173.85.6.240:60097 lost connection
2013-11-20 06:05:38 [iNFO] /37.49.117.19:56538 lost connection
2013-11-20 06:05:38 [iNFO] /173.85.6.240:60231 lost connection
2013-11-20 06:05:38 [iNFO] /37.49.117.19:56539 lost connection
2013-11-20 06:05:49 [iNFO] /78.156.102.20:19999 lost connection
2013-11-20 06:05:54 [iNFO] /78.156.102.20:20044 lost connection