Game crashes when I click on the Resource Pack option

Put the summary of the bug you're having here

What I expected to happen was...:
What should've happened was that the resource packs should've loaded on the right hand side so that I can change the resource pack.

What actually happened was...:
The screen looked as if it was loading and then it closed down. It came up with the Minecraft launcher and said "Uhoh, it looks like the game has crashed! Sorry for the inconvenience 😞"

Minecraft Crash Report ----
// I bet Cylons wouldn't have this problem.

Time: 2/2/16 5:19 PM
Description: Rendering screen

java.lang.NullPointerException: Rendering screen
at bnm$a.f(SourceFile:313)
at azr.a(SourceFile:21)
at azp.a(SourceFile:46)
at awd.a(SourceFile:25)
at awi.b(SourceFile:412)
at awi.a(SourceFile:211)
at azo.a(SourceFile:190)
at bfk.a(SourceFile:1039)
at ave.av(SourceFile:915)
at ave.a(SourceFile:325)
at net.minecraft.client.main.Main.main(SourceFile:124)

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

– Head –
Stacktrace:
at bnm$a.f(SourceFile:313)
at azr.a(SourceFile:21)
at azp.a(SourceFile:46)
at awd.a(SourceFile:25)
at awi.b(SourceFile:412)
at awi.a(SourceFile:211)
at azo.a(SourceFile:190)

– Screen render details –
Details:
Screen name: azo
Mouse location: Scaled: (165, 191). Absolute: (331, 97)
Screen size: Scaled: (427, 240). Absolute: (854, 480). Scale factor of 2
Stacktrace:
at bfk.a(SourceFile:1039)
at ave.av(SourceFile:915)
at ave.a(SourceFile:325)
at net.minecraft.client.main.Main.main(SourceFile:124)

– System Details –
Details:
Minecraft Version: 1.8.9
Operating System: Windows 8.1 (amd64) version 6.3
Java Version: 1.8.0_25, Oracle Corporation
Java VM Version: Java HotSpot(TM) 64-Bit Server VM (mixed mode), Oracle Corporation
Memory: 171968672 bytes (164 MB) / 250101760 bytes (238 MB) up to 1060372480 bytes (1011 MB)
JVM Flags: 6 total; -XX:HeapDumpPath=MojangTricksIntelDriversForPerformance_javaw.exe_minecraft.exe.heapdump -Xmx1G -XX:+UseConcMarkSweepGC -XX:+CMSIncrementalMode -XX:-UseAdaptiveSizePolicy -Xmn128M
IntCache: cache: 0, tcache: 0, allocated: 0, tallocated: 0
Launched Version: 1.8.9
LWJGL: 2.9.4
OpenGL: Intel(R) HD Graphics 4000 GL version 4.0.0 - Build 10.18.10.3308, Intel
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: No
Is Modded: Probably not. Jar signature remains and client brand is untouched.
Type: Client (map_client.txt)
Resource Packs:
Current Language: English (US)
Profiler Position: N/A (disabled)
CPU: 4x Intel(R) Core(TM) i3-3217U CPU @ 1.80GHz

Steps to Reproduce:
1. Go to Options
2. Click Resource Packs