The mod version 1.0.0 seems to not work on multiplayer server

I was going to have my world be named with an "I" in it, but it looks like it crashes when I hit "I" at all. If I had to guess, it's listen for hitting that key on the menu where it shouldn't.

---- Minecraft Crash Report ----
// Why is it breaking :(

Time: 2/19/17 11:25 AM
Description: Updating screen events

java.lang.NullPointerException: Updating screen events
at com.franckyi.itemeditor.event.ModEventHandler.onKeyPressed(ModEventHandler.java:51)
at net.minecraftforge.fml.common.eventhandler.ASMEventHandler_52_ModEventHandler_onKeyPressed_Post.invoke(.dynamic)
at net.minecraftforge.fml.common.eventhandler.ASMEventHandler.invoke(ASMEventHandler.java:90)
at net.minecraftforge.fml.common.eventhandler.EventBus.post(EventBus.java:185)
at net.minecraft.client.gui.GuiScreen.func_146269_k(GuiScreen.java:522)
at net.minecraft.client.Minecraft.func_71407_l(Minecraft.java:1695)
at net.minecraft.client.Minecraft.func_71411_J(Minecraft.java:1056)
at net.minecraft.client.Minecraft.func_99999_d(Minecraft.java:372)
at net.minecraft.client.main.Main.main(SourceFile:124)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
at java.lang.reflect.Method.invoke(Method.java:483)
at net.minecraft.launchwrapper.Launch.launch(Launch.java:135)
at net.minecraft.launchwrapper.Launch.main(Launch.java:28)

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

-- Head --
Thread: Client thread
Stacktrace:
at com.franckyi.itemeditor.event.ModEventHandler.onKeyPressed(ModEventHandler.java:51)
at net.minecraftforge.fml.common.eventhandler.ASMEventHandler_52_ModEventHandler_onKeyPressed_Post.invoke(.dynamic)
at net.minecraftforge.fml.common.eventhandler.ASMEventHandler.invoke(ASMEventHandler.java:90)
at net.minecraftforge.fml.common.eventhandler.EventBus.post(EventBus.java:185)
at net.minecraft.client.gui.GuiScreen.func_146269_k(GuiScreen.java:522)

-- Affected screen --
Details:
Screen name: net.minecraft.client.gui.GuiCreateWorld
Stacktrace:
at net.minecraft.client.Minecraft.func_71407_l(Minecraft.java:1695)
at net.minecraft.client.Minecraft.func_71411_J(Minecraft.java:1056)
at net.minecraft.client.Minecraft.func_99999_d(Minecraft.java:372)
at net.minecraft.client.main.Main.main(SourceFile:124)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
at java.lang.reflect.Method.invoke(Method.java:483)
at net.minecraft.launchwrapper.Launch.launch(Launch.java:135)
at net.minecraft.launchwrapper.Launch.main(Launch.java:28)

-- System Details --
Details:
Minecraft Version: 1.11.2
Operating System: Windows 10 (amd64) version 10.0
Java Version: 1.8.0_25, Oracle Corporation
Java VM Version: Java HotSpot(TM) 64-Bit Server VM (mixed mode), Oracle Corporation
Memory: 1125029832 bytes (1072 MB) / 1827667968 bytes (1743 MB) up to 3817865216 bytes (3641 MB)
JVM Flags: 4 total; -XX:HeapDumpPath=MojangTricksIntelDriversForPerformance_javaw.exe_minecraft.exe.heapdump -Xmx4096m -Xms256m -XX:PermSize=256m
IntCache: cache: 0, tcache: 0, allocated: 0, tallocated: 0
FML: MCP 9.38 Powered by Forge 13.20.0.2232 11 mods loaded, 11 mods active
States: 'U' = Unloaded 'L' = Loaded 'C' = Constructed 'H' = Pre-initialized 'I' = Initialized 'J' = Post-initialized 'A' = Available 'D' = Disabled 'E' = Errored
UCHIJA minecraft{1.11.2} [Minecraft] (minecraft.jar)
UCHIJA mcp{9.19} [Minecraft Coder Pack] (minecraft.jar)
UCHIJA FML{8.0.99.99} [Forge Mod Loader] (forge-1.11.2-13.20.0.2232.jar)
UCHIJA forge{13.20.0.2232} [Minecraft Forge] (forge-1.11.2-13.20.0.2232.jar)
UCHIJA customnpcs{1.11.2} [CustomNPCs] (CustomNPCs_1.11.2_beta(22jan17).jar)
UCHIJA waila{1.8.10} [Waila] (Hwyla-1.8.10-B23_1.11.jar)
UCHIJA itemeditor{1.11.x-0.1.0.0} [Item Editor GUI] (itemeditor-1.11.x-0.1.0.0.jar)
UCHIJA jei{4.2.6.238} [Just Enough Items] (jei_1.11.2-4.2.6.238.jar)
UCHIJA journeymap{1.11.2-5.4.6} [JourneyMap] (journeymap-1.11.2-5.4.6.jar)
UCHIJA variedcommodities{1.11.2} [Varied Commodities] (VariedCommodities_1.11.2(22jan17).jar)
UCHIJA worldedit{6.1.6} [WorldEdit] (worldedit-forge-mc1.11-6.1.6-dist.jar)
Loaded coremods (and transformers):
GL info: ' Vendor: 'NVIDIA Corporation' Version: '4.5.0 NVIDIA 372.70' Renderer: 'GeForce GTX 970M/PCIe/SSE2'
Launched Version: forge-13.20.0.2232
LWJGL: 2.9.4
OpenGL: GeForce GTX 970M/PCIe/SSE2 GL version 4.5.0 NVIDIA 372.70, NVIDIA Corporation
GL Caps: Using GL 1.3 multitexturing.
Using GL 1.3 texture combiners.
Using framebuffer objects because OpenGL 3.0 is supported and separate blending is supported.
Shaders are available because OpenGL 2.1 is supported.
VBOs are available because OpenGL 1.5 is supported.

Using VBOs: Yes
Is Modded: Definitely; Client brand changed to 'fml,forge'
Type: Client (map_client.txt)
Resource Packs: 
Current Language: English (US)
Profiler Position: N/A (disabled)
CPU: 8x Intel(R) Core(TM) i7-6700HQ CPU @ 2.60GHz

Adding a server to the server list and then pressing 'r' will force the game to crash

IBE Editor

Work in progress.

IBE Editor (core)

• Re-import GUI
• Rewrite Configuration

Item Editor

• Re-import GUI
• Re-import Packets
• Remove Configuration
• Rewrite Event Handling
• Create CLI ? (in progress)

Block Editor

• Create GUIs (in progress)
• Create Packets (in progress)

Entity Editor

• Create GUIs
• Create Packets

0.1.0.0 Update

The first major update of the mod. Compact GUI, Attributes Modifiers and more !

Beta 2

General

• Rewrite packet handling
• creativeModeOnly config
• Add list for Lore section
• Forge auto-updater

Fixes

• Various fixes and intenal changes

Beta 1

General

• Rewrite of the GUI system
• Optimization of the "Hide Flags" GUI
• Add "Unbreakable" modifier in "Enchantments" menu
• New ItemStack gestion
• COLORS EVERYWHERE !

Attributes

• GUI Strings for Name
• GUI Double TextFields for Amount
• GUI Buttons for Operation
• GUI Buttons for Slot
• Packet

Compact GUI

• Add config option
• Create GUI
• Fix positionning bugs
• Client and Server Updates

Open GUI in inventory

• Rewrite Event Handling

Fixes

• Empty lore lines not removing
• Localization issues

I can't see each enchant

^ I get a crash to the main menu when I click the "Exit Menu" button in singleplayer. It's not a CTD so I don't have a crash log.