Can't connect to my tekkit server but can connect to vanilla server

[BlueAndGray]

Title: Can't connect to my tekkit server but can connect to vanilla server

Version: 3.1.2

OS: Windows 7 Home Premium 32-bit

Java Version: Java 7

Description of Problem:

I can connect to my vanilla server with localhost, but can't connect with localhost to my tekkit server. I'm using localhost because the server I'm connecting to is on the same computer I'm connecting from. Oddly, it was working before, and yes, I set up port forwarding although I think it has no effect. I also noticed that there's some errors when starting up the server. The errors are in the error log. Please help! :/

Error Messages:

Error Log:

2012-08-27 10:44:21 [sEVERE] java.util.zip.ZipException: Not in GZIP format

2012-08-27 10:44:21 [sEVERE] 	at java.util.zip.GZIPInputStream.readHeader(Unknown Source)

2012-08-27 10:44:21 [sEVERE] 	at java.util.zip.GZIPInputStream.<init>(Unknown Source)

2012-08-27 10:44:21 [sEVERE] 	at java.util.zip.GZIPInputStream.<init>(Unknown Source)

2012-08-27 10:44:21 [sEVERE] 	at net.minecraft.server.NBTCompressedStreamTools.a(SourceFile:9)

2012-08-27 10:44:21 [sEVERE] 	at net.minecraft.server.WorldLoader.b(SourceFile:52)

2012-08-27 10:44:21 [sEVERE] 	at net.minecraft.server.WorldLoaderServer.isConvertable(SourceFile:82)

2012-08-27 10:44:21 [sEVERE] 	at net.minecraft.server.MinecraftServer.a(MinecraftServer.java:239)

2012-08-27 10:44:21 [sEVERE] 	at net.minecraft.server.MinecraftServer.init(MinecraftServer.java:208)

2012-08-27 10:44:21 [sEVERE] 	at net.minecraft.server.MinecraftServer.run(MinecraftServer.java:438)

2012-08-27 10:44:21 [sEVERE] 	at net.minecraft.server.ThreadServerApplication.run(SourceFile:492)

2012-08-27 10:44:21 [sEVERE] java.util.zip.ZipException: Not in GZIP format

2012-08-27 10:44:21 [sEVERE] 	at java.util.zip.GZIPInputStream.readHeader(Unknown Source)

2012-08-27 10:44:21 [sEVERE] 	at java.util.zip.GZIPInputStream.<init>(Unknown Source)

2012-08-27 10:44:21 [sEVERE] 	at java.util.zip.GZIPInputStream.<init>(Unknown Source)

2012-08-27 10:44:21 [sEVERE] 	at net.minecraft.server.NBTCompressedStreamTools.a(SourceFile:9)

2012-08-27 10:44:21 [sEVERE] 	at net.minecraft.server.WorldNBTStorage.getWorldData(WorldNBTStorage.java:89)

2012-08-27 10:44:21 [sEVERE] 	at net.minecraft.server.World.<init>(World.java:148)

2012-08-27 10:44:21 [sEVERE] 	at net.minecraft.server.WorldServer.<init>(WorldServer.java:30)

2012-08-27 10:44:21 [sEVERE] 	at net.minecraft.server.MinecraftServer.a(MinecraftServer.java:276)

2012-08-27 10:44:21 [sEVERE] 	at net.minecraft.server.MinecraftServer.init(MinecraftServer.java:208)

2012-08-27 10:44:21 [sEVERE] 	at net.minecraft.server.MinecraftServer.run(MinecraftServer.java:438)

2012-08-27 10:44:21 [sEVERE] 	at net.minecraft.server.ThreadServerApplication.run(SourceFile:492)

2012-08-27 10:44:21 [sEVERE] java.lang.NullPointerException

2012-08-27 10:44:21 [sEVERE] 	at codechicken.wirelessredstone.core.RedstoneEther.setDimensionTransmitterCount(RedstoneEther.java:1484)

2012-08-27 10:44:21 [sEVERE] 	at codechicken.wirelessredstone.core.SaveManager.loadDimensionHash(SaveManager.java:656)

2012-08-27 10:44:21 [sEVERE] 	at codechicken.wirelessredstone.core.RedstoneEther.reload(RedstoneEther.java:105)

2012-08-27 10:44:21 [sEVERE] 	at codechicken.wirelessredstone.core.RedstoneEtherSaveHandler.onWorldLoad(RedstoneEtherSaveHandler.java:12)

2012-08-27 10:44:21 [sEVERE] 	at forge.ForgeHooks.onWorldLoad(ForgeHooks.java:292)

2012-08-27 10:44:21 [sEVERE] 	at net.minecraft.server.WorldServer.<init>(WorldServer.java:37)

2012-08-27 10:44:21 [sEVERE] 	at net.minecraft.server.MinecraftServer.a(MinecraftServer.java:276)

2012-08-27 10:44:21 [sEVERE] 	at net.minecraft.server.MinecraftServer.init(MinecraftServer.java:208)

2012-08-27 10:44:21 [sEVERE] 	at net.minecraft.server.MinecraftServer.run(MinecraftServer.java:438)

2012-08-27 10:44:21 [sEVERE] 	at net.minecraft.server.ThreadServerApplication.run(SourceFile:492)

2012-08-27 10:44:21 [sEVERE] Unexpected exception

java.lang.NullPointerException

	at codechicken.wirelessredstone.core.RedstoneEther.setDimensionTransmitterCount(RedstoneEther.java:1484)

	at codechicken.wirelessredstone.core.SaveManager.loadDimensionHash(SaveManager.java:656)

	at codechicken.wirelessredstone.core.RedstoneEther.reload(RedstoneEther.java:105)

	at codechicken.wirelessredstone.core.RedstoneEtherSaveHandler.onWorldLoad(RedstoneEtherSaveHandler.java:12)

	at forge.ForgeHooks.onWorldLoad(ForgeHooks.java:292)

	at net.minecraft.server.WorldServer.<init>(WorldServer.java:37)

	at net.minecraft.server.MinecraftServer.a(MinecraftServer.java:276)

	at net.minecraft.server.MinecraftServer.init(MinecraftServer.java:208)

	at net.minecraft.server.MinecraftServer.run(MinecraftServer.java:438)

	at net.minecraft.server.ThreadServerApplication.run(SourceFile:492)

[XdeathringzX]

same problem. someone seek to this.

[BooLTonian]

Well I noticed one problem. In the world folder there is a Railcraft.Dat thing. Go into 7zip or something like that that can change file extensions with it's renaming, and Change it to ".GZIP". Who knows that could even be the entire problem.

[XdeathringzX]

Well I noticed one problem. In the world folder there is a Railcraft.Dat thing. Go into 7zip or something like that that can change file extensions with it's renaming, and Change it to ".GZIP". Who knows that could even be the entire problem.

no, it would say "railcraft not in GZIP" ive had that problem before.