When I put on diamond Frost Walker II boots in creative mode, my game crashed. here is the crash report:

---- Minecraft Crash Report ----
// Ooh. Shiny.

Time: 12/2/15 6:33 PM
Description: Unexpected error

java.lang.NullPointerException: Unexpected error
at rx.a_(SourceFile:409)
at zo.a(SourceFile:1818)
at rx.a(SourceFile:1198)
at bkg.a(SourceFile:373)
at bbz.au(SourceFile:1450)
at bbz.ax(SourceFile:1934)
at bbz.aw(SourceFile:1752)
at bbz.s(SourceFile:1596)
at bbz.as(SourceFile:942)
at bbz.a(SourceFile:386)
at net.minecraft.client.main.Main.main(SourceFile:122)

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

– Head –
Stacktrace:
at rx.a_(SourceFile:409)
at zo.a(SourceFile:1818)
at rx.a(SourceFile:1198)
at bkg.a(SourceFile:373)
at bbz.au(SourceFile:1450)
at bbz.ax(SourceFile:1934)
at bbz.aw(SourceFile:1752)

– Affected level –
Details:
Level name: MpServer
All players: 1 total; [bmg['CarlyCupcakez'/93, l='MpServer', x=635.60, y=4.00, z=7.74]]
Chunk stats: MultiplayerChunkCache: 169, 169
Level seed: 0
Level generator: ID 01 - flat, ver 0. Features enabled: false
Level generator options:
Level spawn location: World: (632,4,10), Chunk: (at 8,0,10 in 39,0; contains blocks 624,0,0 to 639,255,15), Region: (1,0; contains chunks 32,0 to 63,31, blocks 512,0,0 to 1023,255,511)
Level time: 36172 game time, 6697 day time
Level dimension: 0
Level storage version: 0x00000 - Unknown?
Level weather: Rain time: 0 (now: false), thunder time: 0 (now: false)
Level game mode: Game mode: creative (ID 1). Hardcore: false. Cheats: false
Forced entities: 47 total; [vt['Chicken'/8, l='MpServer', x=558.38, y=4.00, z=-22.44], vy['Pig'/14, l='MpServer', x=575.91, y=4.00, z=-3.88], vy['Pig'/15, l='MpServer', x=593.78, y=4.00, z=-7.59], xz['item.item.egg'/401161, l='MpServer', x=690.63, y=4.00, z=-19.16], vy['Pig'/16, l='MpServer', x=582.50, y=4.00, z=-6.50], vy['Pig'/17, l='MpServer', x=583.50, y=4.00, z=-5.50], wa['Sheep'/26, l='MpServer', x=620.16, y=4.00, z=-63.34], wa['Sheep'/27, l='MpServer', x=621.94, y=4.00, z=41.84], wa['Sheep'/28, l='MpServer', x=631.03, y=4.00, z=-45.03], wa['Sheep'/29, l='MpServer', x=629.50, y=4.00, z=-56.50], wa['Sheep'/30, l='MpServer', x=629.50, y=4.00, z=-56.50], wa['Sheep'/31, l='MpServer', x=633.13, y=4.00, z=42.41], wa['Sheep'/32, l='MpServer', x=628.78, y=4.00, z=51.97], wa['Sheep'/33, l='MpServer', x=632.50, y=4.00, z=74.50], wa['Sheep'/34, l='MpServer', x=622.13, y=4.00, z=66.81], wa['Sheep'/35, l='MpServer', x=631.22, y=4.00, z=80.97], vy['Pig'/36, l='MpServer', x=651.50, y=4.00, z=-33.50], vy['Pig'/37, l='MpServer', x=644.94, y=4.00, z=-28.81], vy['Pig'/38, l='MpServer', x=648.69, y=4.00, z=-29.41], vy['Pig'/39, l='MpServer', x=631.91, y=4.00, z=-25.97], vy['Pig'/40, l='MpServer', x=654.66, y=4.00, z=51.88], vy['Pig'/41, l='MpServer', x=654.97, y=4.00, z=53.31], vy['Pig'/42, l='MpServer', x=653.50, y=4.00, z=48.50], vy['Pig'/43, l='MpServer', x=649.78, y=4.00, z=56.09], wa['Sheep'/44, l='MpServer', x=653.50, y=4.00, z=72.50], wa['Sheep'/45, l='MpServer', x=654.50, y=4.00, z=71.50], wa['Sheep'/46, l='MpServer', x=653.69, y=4.00, z=66.28], wa['Sheep'/47, l='MpServer', x=647.97, y=4.00, z=62.97], xz['item.item.egg'/726564, l='MpServer', x=688.34, y=4.00, z=-7.72], wa['Sheep'/48, l='MpServer', x=641.88, y=4.00, z=68.63], wa['Sheep'/49, l='MpServer', x=653.03, y=4.00, z=57.00], bmg['CarlyCupcakez'/93, l='MpServer', x=635.60, y=4.00, z=7.74], vt['Chicken'/54, l='MpServer', x=687.59, y=4.00, z=-25.41], xz['item.item.egg'/55, l='MpServer', x=687.03, y=4.00, z=-25.09], vt['Chicken'/56, l='MpServer', x=688.53, y=4.00, z=-8.63], vt['Chicken'/57, l='MpServer', x=690.50, y=4.00, z=-18.50], vt['Chicken'/58, l='MpServer', x=694.41, y=4.00, z=-24.47], vt['Chicken'/60, l='MpServer', x=692.59, y=4.00, z=12.50], xz['item.item.egg'/61, l='MpServer', x=693.50, y=4.00, z=12.13], vy['Pig'/62, l='MpServer', x=702.78, y=4.00, z=47.25], vy['Pig'/63, l='MpServer', x=699.97, y=4.00, z=49.97], vy['Pig'/64, l='MpServer', x=689.91, y=4.00, z=52.81], vt['Chicken'/65, l='MpServer', x=711.56, y=4.00, z=-2.38], vt['Chicken'/66, l='MpServer', x=705.50, y=4.00, z=14.50], vt['Chicken'/68, l='MpServer', x=706.53, y=4.00, z=22.28], vy['Pig'/69, l='MpServer', x=708.25, y=4.00, z=43.97], xz['item.item.egg'/890731, l='MpServer', x=693.81, y=4.00, z=-25.13]]
Retry entities: 0 total; []
Server brand: vanilla
Server type: Integrated singleplayer server
Stacktrace:
at bkh.a(SourceFile:364)
at bbz.b(SourceFile:2496)
at bbz.a(SourceFile:400)
at net.minecraft.client.main.Main.main(SourceFile:122)

– System Details –
Details:
Minecraft Version: 15w49a
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: 166842856 bytes (159 MB) / 251883520 bytes (240 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: 15w49a
LWJGL: 2.9.4
OpenGL: AMD Radeon HD 8240 GL version 4.5.13399 Compatibility Profile Context 15.200.1060.0, ATI Technologies Inc.
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: 2x AMD E1-2500 APU with Radeon(TM) HD Graphics