Bug report : Ticking screen exception caught during event FMLNetworkEvent$ClientConnectedToServerEvent

[Goosegit11]

Describe the bug
Advanced Backups client-side exception when trying to connect to the server

To Reproduce
Steps to reproduce the behavior:

Try to connect to the server from the client
Get exception on the client

Expected behavior
Succesfully connecting to the server

Screenshots

Versioning (please complete the following information):

• OS: Arch Linux Client, Debian Server
• Minecraft Version(s): 1.7.10
• Modloader(s): Forge 10.13.4.1614 (Latest and last for 1.7.10)
• Mod Version: 3.6.3 (Both Client and Server)

Additional context
Works flawlessly when removing mod from client side.
I get that all I lose is toasts, but anyway

[HeatherComputer]

Are you able to attach the full crash log? (the yellow text in the screenshot should be clickable)

I'm away from home right now so can't get a repro, but nonetheless if it's a simple fix I'll have it in the next release.

[Goosegit11]

Oh yeah, I forgot to add the actual log
It's not clickable, I am always just opening the Prism Launcher log

[16:03:16] [Client thread/ERROR] [FML]: HandshakeCompletionHandler exception
java.lang.NullPointerException
	at co.uk.mommyheather.advancedbackups.core.config.ClientConfigManager.writeConfig(ClientConfigManager.java:72) ~[ClientConfigManager.class:3.6.3]
	at co.uk.mommyheather.advancedbackups.core.config.ClientConfigManager.loadOrCreateConfig(ClientConfigManager.java:63) ~[ClientConfigManager.class:3.6.3]
	at co.uk.mommyheather.advancedbackups.client.ABClientRenderer.onServerConnected(ABClientRenderer.java:86) ~[ABClientRenderer.class:3.6.3]
	at cpw.mods.fml.common.eventhandler.ASMEventHandler_2_ABClientRenderer_onServerConnected_ClientConnectedToServerEvent.invoke(.dynamic) ~[?:?]
	at cpw.mods.fml.common.eventhandler.ASMEventHandler.invoke(ASMEventHandler.java:54) ~[ASMEventHandler.class:?]
	at cpw.mods.fml.common.eventhandler.EventBus.post(EventBus.java:140) ~[EventBus.class:?]
	at cpw.mods.fml.common.network.handshake.NetworkDispatcher.completeClientSideConnection(NetworkDispatcher.java:181) ~[NetworkDispatcher.class:?]
	at cpw.mods.fml.common.network.handshake.NetworkDispatcher.completeHandshake(NetworkDispatcher.java:459) ~[NetworkDispatcher.class:?]
	at cpw.mods.fml.common.network.internal.HandshakeCompletionHandler.channelRead0(HandshakeCompletionHandler.java:17) ~[HandshakeCompletionHandler.class:?]
	at cpw.mods.fml.common.network.internal.HandshakeCompletionHandler.channelRead0(HandshakeCompletionHandler.java:11) ~[HandshakeCompletionHandler.class:?]
	at io.netty.channel.SimpleChannelInboundHandler.channelRead(SimpleChannelInboundHandler.java:98) ~[netty-all-4.0.10.Final.jar:?]
	at io.netty.channel.DefaultChannelHandlerContext.invokeChannelRead(DefaultChannelHandlerContext.java:337) [netty-all-4.0.10.Final.jar:?]
	at io.netty.channel.DefaultChannelHandlerContext.fireChannelRead(DefaultChannelHandlerContext.java:323) [netty-all-4.0.10.Final.jar:?]
	at io.netty.channel.SimpleChannelInboundHandler.channelRead(SimpleChannelInboundHandler.java:101) [netty-all-4.0.10.Final.jar:?]
	at io.netty.channel.DefaultChannelHandlerContext.invokeChannelRead(DefaultChannelHandlerContext.java:337) [netty-all-4.0.10.Final.jar:?]
	at io.netty.channel.DefaultChannelHandlerContext.fireChannelRead(DefaultChannelHandlerContext.java:323) [netty-all-4.0.10.Final.jar:?]
	at io.netty.channel.SimpleChannelInboundHandler.channelRead(SimpleChannelInboundHandler.java:101) [netty-all-4.0.10.Final.jar:?]
	at io.netty.channel.DefaultChannelHandlerContext.invokeChannelRead(DefaultChannelHandlerContext.java:337) [netty-all-4.0.10.Final.jar:?]
	at io.netty.channel.DefaultChannelHandlerContext.fireChannelRead(DefaultChannelHandlerContext.java:323) [netty-all-4.0.10.Final.jar:?]
	at io.netty.handler.codec.MessageToMessageDecoder.channelRead(MessageToMessageDecoder.java:103) [netty-all-4.0.10.Final.jar:?]
	at io.netty.handler.codec.MessageToMessageCodec.channelRead(MessageToMessageCodec.java:111) [netty-all-4.0.10.Final.jar:?]
	at io.netty.channel.DefaultChannelHandlerContext.invokeChannelRead(DefaultChannelHandlerContext.java:337) [netty-all-4.0.10.Final.jar:?]
	at io.netty.channel.DefaultChannelHandlerContext.fireChannelRead(DefaultChannelHandlerContext.java:323) [netty-all-4.0.10.Final.jar:?]
	at io.netty.channel.DefaultChannelPipeline.fireChannelRead(DefaultChannelPipeline.java:785) [netty-all-4.0.10.Final.jar:?]
	at io.netty.channel.embedded.EmbeddedChannel.writeInbound(EmbeddedChannel.java:169) [netty-all-4.0.10.Final.jar:?]
	at cpw.mods.fml.common.network.internal.FMLProxyPacket.func_148833_a(FMLProxyPacket.java:77) [FMLProxyPacket.class:?]
	at net.minecraft.network.NetworkManager.func_74428_b(NetworkManager.java:212) [ej.class:?]
	at net.minecraft.client.multiplayer.GuiConnecting.func_73876_c(SourceFile:78) [bcx.class:?]
	at net.minecraft.client.Minecraft.func_71407_l(Minecraft.java:1661) [bao.class:?]
	at net.minecraft.client.Minecraft.func_71411_J(Minecraft.java:973) [bao.class:?]
	at net.minecraft.client.Minecraft.func_99999_d(Minecraft.java:4506) [bao.class:?]
	at net.minecraft.client.main.Main.main(SourceFile:148) [Main.class:?]
	at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) ~[?:1.8.0_422]
	at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62) ~[?:1.8.0_422]
	at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) ~[?:1.8.0_422]
	at java.lang.reflect.Method.invoke(Method.java:498) ~[?:1.8.0_422]
	at net.minecraft.launchwrapper.Launch.launch(Launch.java:135) [launchwrapper-1.12.jar:?]
	at net.minecraft.launchwrapper.Launch.main(Launch.java:28) [launchwrapper-1.12.jar:?]
	at org.prismlauncher.launcher.impl.StandardLauncher.launch(StandardLauncher.java:105) [NewLaunch.jar:?]
	at org.prismlauncher.EntryPoint.listen(EntryPoint.java:129) [NewLaunch.jar:?]
	at org.prismlauncher.EntryPoint.main(EntryPoint.java:70) [NewLaunch.jar:?]
[16:03:16] [Client thread/ERROR] [FML]: There was a critical exception handling a packet on channel FML
java.lang.NullPointerException
	at co.uk.mommyheather.advancedbackups.core.config.ClientConfigManager.writeConfig(ClientConfigManager.java:72) ~[ClientConfigManager.class:3.6.3]
	at co.uk.mommyheather.advancedbackups.core.config.ClientConfigManager.loadOrCreateConfig(ClientConfigManager.java:63) ~[ClientConfigManager.class:3.6.3]
	at co.uk.mommyheather.advancedbackups.client.ABClientRenderer.onServerConnected(ABClientRenderer.java:86) ~[ABClientRenderer.class:3.6.3]
	at cpw.mods.fml.common.eventhandler.ASMEventHandler_2_ABClientRenderer_onServerConnected_ClientConnectedToServerEvent.invoke(.dynamic) ~[?:?]
	at cpw.mods.fml.common.eventhandler.ASMEventHandler.invoke(ASMEventHandler.java:54) ~[ASMEventHandler.class:?]
	at cpw.mods.fml.common.eventhandler.EventBus.post(EventBus.java:140) ~[EventBus.class:?]
	at cpw.mods.fml.common.network.handshake.NetworkDispatcher.completeClientSideConnection(NetworkDispatcher.java:181) ~[NetworkDispatcher.class:?]
	at cpw.mods.fml.common.network.handshake.NetworkDispatcher.completeHandshake(NetworkDispatcher.java:459) ~[NetworkDispatcher.class:?]
	at cpw.mods.fml.common.network.internal.HandshakeCompletionHandler.channelRead0(HandshakeCompletionHandler.java:17) ~[HandshakeCompletionHandler.class:?]
	at cpw.mods.fml.common.network.internal.HandshakeCompletionHandler.channelRead0(HandshakeCompletionHandler.java:11) ~[HandshakeCompletionHandler.class:?]
	at io.netty.channel.SimpleChannelInboundHandler.channelRead(SimpleChannelInboundHandler.java:98) ~[netty-all-4.0.10.Final.jar:?]
	at io.netty.channel.DefaultChannelHandlerContext.invokeChannelRead(DefaultChannelHandlerContext.java:337) ~[netty-all-4.0.10.Final.jar:?]
	at io.netty.channel.DefaultChannelHandlerContext.fireChannelRead(DefaultChannelHandlerContext.java:323) ~[netty-all-4.0.10.Final.jar:?]
	at io.netty.channel.SimpleChannelInboundHandler.channelRead(SimpleChannelInboundHandler.java:101) ~[netty-all-4.0.10.Final.jar:?]
	at io.netty.channel.DefaultChannelHandlerContext.invokeChannelRead(DefaultChannelHandlerContext.java:337) ~[netty-all-4.0.10.Final.jar:?]
	at io.netty.channel.DefaultChannelHandlerContext.fireChannelRead(DefaultChannelHandlerContext.java:323) ~[netty-all-4.0.10.Final.jar:?]
	at io.netty.channel.SimpleChannelInboundHandler.channelRead(SimpleChannelInboundHandler.java:101) ~[netty-all-4.0.10.Final.jar:?]
	at io.netty.channel.DefaultChannelHandlerContext.invokeChannelRead(DefaultChannelHandlerContext.java:337) ~[netty-all-4.0.10.Final.jar:?]
	at io.netty.channel.DefaultChannelHandlerContext.fireChannelRead(DefaultChannelHandlerContext.java:323) ~[netty-all-4.0.10.Final.jar:?]
	at io.netty.handler.codec.MessageToMessageDecoder.channelRead(MessageToMessageDecoder.java:103) ~[netty-all-4.0.10.Final.jar:?]
	at io.netty.handler.codec.MessageToMessageCodec.channelRead(MessageToMessageCodec.java:111) ~[netty-all-4.0.10.Final.jar:?]
	at io.netty.channel.DefaultChannelHandlerContext.invokeChannelRead(DefaultChannelHandlerContext.java:337) ~[netty-all-4.0.10.Final.jar:?]
	at io.netty.channel.DefaultChannelHandlerContext.fireChannelRead(DefaultChannelHandlerContext.java:323) ~[netty-all-4.0.10.Final.jar:?]
	at io.netty.channel.DefaultChannelPipeline.fireChannelRead(DefaultChannelPipeline.java:785) ~[netty-all-4.0.10.Final.jar:?]
	at io.netty.channel.embedded.EmbeddedChannel.writeInbound(EmbeddedChannel.java:169) ~[netty-all-4.0.10.Final.jar:?]
	at cpw.mods.fml.common.network.internal.FMLProxyPacket.func_148833_a(FMLProxyPacket.java:77) [FMLProxyPacket.class:?]
	at net.minecraft.network.NetworkManager.func_74428_b(NetworkManager.java:212) [ej.class:?]
	at net.minecraft.client.multiplayer.GuiConnecting.func_73876_c(SourceFile:78) [bcx.class:?]
	at net.minecraft.client.Minecraft.func_71407_l(Minecraft.java:1661) [bao.class:?]
	at net.minecraft.client.Minecraft.func_71411_J(Minecraft.java:973) [bao.class:?]
	at net.minecraft.client.Minecraft.func_99999_d(Minecraft.java:4506) [bao.class:?]
	at net.minecraft.client.main.Main.main(SourceFile:148) [Main.class:?]
	at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) ~[?:1.8.0_422]
	at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62) ~[?:1.8.0_422]
	at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) ~[?:1.8.0_422]
	at java.lang.reflect.Method.invoke(Method.java:498) ~[?:1.8.0_422]
	at net.minecraft.launchwrapper.Launch.launch(Launch.java:135) [launchwrapper-1.12.jar:?]
	at net.minecraft.launchwrapper.Launch.main(Launch.java:28) [launchwrapper-1.12.jar:?]
	at org.prismlauncher.launcher.impl.StandardLauncher.launch(StandardLauncher.java:105) [NewLaunch.jar:?]
	at org.prismlauncher.EntryPoint.listen(EntryPoint.java:129) [NewLaunch.jar:?]
	at org.prismlauncher.EntryPoint.main(EntryPoint.java:70) [NewLaunch.jar:?]

[HeatherComputer]

Thanks for the log. One more question, does this happen in local worlds at all?

[Goosegit11]

No

[HeatherComputer]

Thanks. That should be all I need for a consistent repro when I'm home.