[MC 1.12.2] Crash when trying to open newly created list

[KniveX]

Mod version: 1.1.4

Steps to reproduce:

1. Open TODOList GUI
2. Press "Add" button
3. Input a list name, and press "Done" button
4. On list selection, click the new list
5. Press "Open" button
6. The problem occured

Here's the stacktrace

Time: 6/17/18 6:23 PM
Description: Rendering screen

java.lang.NumberFormatException: For input string: "TODOList-1"
	at java.lang.NumberFormatException.forInputString(NumberFormatException.java:65)
	at java.lang.Integer.parseInt(Integer.java:580)
	at java.lang.Integer.parseInt(Integer.java:615)
	at tiffit.todolist.versionchecker.TDLVersion.getMajor(TDLVersion.java:34)
	at tiffit.todolist.versionchecker.TDLVersion.isGreaterVersion(TDLVersion.java:52)
	at tiffit.todolist.gui.TODOListGui.func_73863_a(TODOListGui.java:53)
	at net.minecraftforge.client.ForgeHooksClient.drawScreen(ForgeHooksClient.java:368)
	at sun.reflect.GeneratedMethodAccessor31.invoke(Unknown Source)
	at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
	at java.lang.reflect.Method.invoke(Method.java:498)
	at Reflector.callVoid(Reflector.java:648)
	at net.minecraft.client.renderer.EntityRenderer.func_181560_a(EntityRenderer.java:1456)
	at net.minecraft.client.Minecraft.func_71411_J(Minecraft.java:1117)
	at net.minecraft.client.Minecraft.func_99999_d(Minecraft.java:397)
	at net.minecraft.client.main.Main.main(SourceFile:123)
	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:498)
	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 java.lang.NumberFormatException.forInputString(NumberFormatException.java:65)
	at java.lang.Integer.parseInt(Integer.java:580)
	at java.lang.Integer.parseInt(Integer.java:615)
	at tiffit.todolist.versionchecker.TDLVersion.getMajor(TDLVersion.java:34)
	at tiffit.todolist.versionchecker.TDLVersion.isGreaterVersion(TDLVersion.java:52)
	at tiffit.todolist.gui.TODOListGui.func_73863_a(TODOListGui.java:53)
	at net.minecraftforge.client.ForgeHooksClient.drawScreen(ForgeHooksClient.java:368)
	at sun.reflect.GeneratedMethodAccessor31.invoke(Unknown Source)
	at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
	at java.lang.reflect.Method.invoke(Method.java:498)
	at Reflector.callVoid(Reflector.java:648)

-- Screen render details --
Details:
	Screen name: tiffit.todolist.gui.TODOListGui
	Mouse location: Scaled: (678, 490). Absolute: (1356, 75)
	Screen size: Scaled: (1252, 528). Absolute: (2503, 1056). Scale factor of 2