If I start Minecraft in eclipse everything works great, but if I connect to my server(in offline mode) I become an Error.

 

 

 

---- Minecraft Crash Report ----

// Oh - I know what I did wrong!

 

Time: 14.07.14 17:50

Description: Ticking screen

 

java.lang.NullPointerException

at java.net.URLEncoder.encode(URLEncoder.java:205)

at net.minecraft.client.multiplayer.NetClientHandler.urlEncode(NetClientHandler.java:336)

at net.minecraft.client.multiplayer.NetClientHandler.sendSessionRequest(NetClientHandler.java:318)

at net.minecraft.client.multiplayer.NetClientHandler.handleServerAuthData(NetClientHandler.java:299)

at net.minecraft.network.packet.Packet253ServerAuthData.processPacket(Packet253ServerAuthData.java:51)

at net.minecraft.network.TcpConnection.processReadPackets(TcpConnection.java:462)

at net.minecraft.client.multiplayer.NetClientHandler.processReadPackets(NetClientHandler.java:281)

at net.minecraft.client.multiplayer.GuiConnecting.updateScreen(GuiConnecting.java:51)

at net.minecraft.client.Minecraft.runTick(Minecraft.java:1578)

at net.minecraft.client.Minecraft.runGameLoop(Minecraft.java:908)

at net.minecraft.client.Minecraft.run(Minecraft.java:836)

at net.minecraft.client.main.Main.main(Main.java:93)

at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)

at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:57)

at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)

at java.lang.reflect.Method.invoke(Method.java:601)

at net.minecraft.launchwrapper.Launch.launch(Launch.java:131)

at net.minecraft.launchwrapper.Launch.main(Launch.java:27)

 

 

A detailed walkthrough of the error, its code path and all known details is as follows:

---------------------------------------------------------------------------------------

 

-- Head --

Stacktrace:

at java.net.URLEncoder.encode(URLEncoder.java:205)

at net.minecraft.client.multiplayer.NetClientHandler.urlEncode(NetClientHandler.java:336)

at net.minecraft.client.multiplayer.NetClientHandler.sendSessionRequest(NetClientHandler.java:318)

at net.minecraft.client.multiplayer.NetClientHandler.handleServerAuthData(NetClientHandler.java:299)

at net.minecraft.network.packet.Packet253ServerAuthData.processPacket(Packet253ServerAuthData.java:51)

at net.minecraft.network.TcpConnection.processReadPackets(TcpConnection.java:462)

at net.minecraft.client.multiplayer.NetClientHandler.processReadPackets(NetClientHandler.java:281)

at net.minecraft.client.multiplayer.GuiConnecting.updateScreen(GuiConnecting.java:51)

 

-- Affected screen --

Details:

Screen name: net.minecraft.client.multiplayer.GuiConnecting

Stacktrace:

at net.minecraft.client.Minecraft.runTick(Minecraft.java:1578)

at net.minecraft.client.Minecraft.runGameLoop(Minecraft.java:908)

at net.minecraft.client.Minecraft.run(Minecraft.java:836)

at net.minecraft.client.main.Main.main(Main.java:93)

at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)

at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:57)

at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)

at java.lang.reflect.Method.invoke(Method.java:601)

at net.minecraft.launchwrapper.Launch.launch(Launch.java:131)

at net.minecraft.launchwrapper.Launch.main(Launch.java:27)

 

-- System Details --

Details:

Minecraft Version: 1.6.4

Operating System: Windows 7 (x86) version 6.1

Java Version: 1.7.0_21, Oracle Corporation

Java VM Version: Java HotSpot Client VM (mixed mode), Oracle Corporation

Memory: 994378040 bytes (948 MB) / 1046937600 bytes (998 MB) up to 1046937600 bytes (998 MB)

JVM Flags: 3 total; -Xincgc -Xmx1024M -Xms1024M

AABB Pool Size: 0 (0 bytes; 0 MB) allocated, 0 (0 bytes; 0 MB) used

Suspicious classes: FML and Forge are installed

IntCache: cache: 0, tcache: 0, allocated: 0, tallocated: 0

FML: MCP v8.11 FML v6.4.3.883 Minecraft Forge 9.11.0.883 4 mods loaded, 4 mods active

mcp{8.09} [Minecraft Coder Pack] (minecraft.jar) Unloaded->Constructed->Pre-initialized->Initialized->Post-initialized->Available

FML{6.4.3.883} [Forge Mod Loader] (bin) Unloaded->Constructed->Pre-initialized->Initialized->Post-initialized->Available

Forge{9.11.0.883} [Minecraft Forge] (bin) Unloaded->Constructed->Pre-initialized->Initialized->Post-initialized->Available

MS{1.0.0} [skill-Mod] (bin) Unloaded->Constructed->Pre-initialized->Initialized->Post-initialized->Available

Launched Version: 1.6

LWJGL: 2.9.0

OpenGL: GeForce GT 430/PCIe/SSE2 GL version 4.4.0, NVIDIA Corporation

Is Modded: Definitely; Client brand changed to 'fml,forge'

Type: Client (map_client.txt)

Resource Pack: Default

Current Language: English (US)

Profiler Position: N/A (disabled)

Vec3 Pool Size: ~~ERROR~~ NullPointerException: null

If you're making a connection to something try to surround it in try-catches also if you are in offline mode why are you even trying to connect to a server?

If I test my Mod in eclipse the Server has to be in offline mode !? But, also in online mode this is not working.