Crashing when trying to upload sound

[dancats511]

I was trying out this mod and tested it out on my private server to see if I could mess around with it with some friends and when I tried to upload a 30 MB .wav file I got a crash report. As you can see, there's quite a few other mods on the server in the crash report. I don't know if this mod is not ready for multiplayer yet or something or if I'm doing something wrong, I just got it because it sounded cool.

---- Minecraft Crash Report ----
// Surprise! Haha. Well, this is awkward.

Time: 7/11/14 10:26 PM
Description: Updating screen events

java.lang.NullPointerException: Updating screen events
at com.dynious.soundscool.helper.NetworkHelper.uploadSound(NetworkHelper.java:56)
at com.dynious.soundscool.helper.NetworkHelper.clientSoundUpload(NetworkHelper.java:43)
at com.dynious.soundscool.client.gui.GuiSounds.func_146284_a(GuiSounds.java:155)
at net.minecraft.client.gui.GuiScreen.func_73864_a(GuiScreen.java:225)
at net.minecraft.client.gui.GuiScreen.func_146274_d(GuiScreen.java:301)
at net.minecraft.client.gui.GuiScreen.func_146269_k(GuiScreen.java:268)
at net.minecraft.client.Minecraft.func_71407_l(Minecraft.java:1580)
at net.minecraft.client.Minecraft.func_71411_J(Minecraft.java:917)
at net.minecraft.client.Minecraft.func_99999_d(Minecraft.java:835)
at net.minecraft.client.main.Main.main(SourceFile:103)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(Unknown Source)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(Unknown Source)
at java.lang.reflect.Method.invoke(Unknown Source)
at net.minecraft.launchwrapper.Launch.launch(Launch.java:134)
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 --
Stacktrace:
at com.dynious.soundscool.helper.NetworkHelper.uploadSound(NetworkHelper.java:56)
at com.dynious.soundscool.helper.NetworkHelper.clientSoundUpload(NetworkHelper.java:43)
at com.dynious.soundscool.client.gui.GuiSounds.func_146284_a(GuiSounds.java:155)
at net.minecraft.client.gui.GuiScreen.func_73864_a(GuiScreen.java:225)
at net.minecraft.client.gui.GuiScreen.func_146274_d(GuiScreen.java:301)
at net.minecraft.client.gui.GuiScreen.func_146269_k(GuiScreen.java:268)

-- Affected screen --
Details:
Screen name: com.dynious.soundscool.client.gui.GuiSounds

-- Affected level --
Details:
Level name: MpServer
All players: 1 total; [EntityClientPlayerMP['dancats511'/1634, l='MpServer', x=526.14, y=60.62, z=318.50]]
Chunk stats: MultiplayerChunkCache: 169, 169
Level seed: 0
Level generator: ID 00 - default, ver 1. Features enabled: false
Level generator options:
Level spawn location: World: (519,57,323), Chunk: (at 7,3,3 in 32,20; contains blocks 512,0,320 to 527,255,335), Region: (1,0; contains chunks 32,0 to 63,31, blocks 512,0,0 to 1023,255,511)
Level time: 2943271 game time, 3802317 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: survival (ID 0). Hardcore: false. Cheats: false
Forced entities: 38 total; [EntityPlayerChild['entity.mca.EntityPlayerChild.name'/1642, l='MpServer', x=505.81, y=59.00, z=330.72], EntityClientPlayerMP['dancats511'/1634, l='MpServer', x=526.14, y=60.62, z=318.50], EntityVillagerAdult['entity.mca.EntityVillagerAdult.name'/1643, l='MpServer', x=508.25, y=59.00, z=328.59], EntityVillagerAdult['entity.mca.EntityVillagerAdult.name'/1640, l='MpServer', x=502.28, y=59.00, z=332.69], EntityPlayerChild['entity.mca.EntityPlayerChild.name'/1641, l='MpServer', x=507.63, y=59.00, z=325.88], EntityVillagerAdult['entity.mca.EntityVillagerAdult.name'/1646, l='MpServer', x=528.28, y=60.00, z=322.81], EntitySheep['Sheep'/1647, l='MpServer', x=543.26, y=64.00, z=321.08], EntityBat['Bat'/1644, l='MpServer', x=518.11, y=25.03, z=303.58], EntitySkeleton['Skeleton'/1645, l='MpServer', x=534.50, y=30.00, z=331.50], EntityCreeper['Creeper'/1635, l='MpServer', x=512.00, y=33.00, z=310.44], EntityCreeper['Creeper'/1768, l='MpServer', x=497.50, y=41.00, z=364.50], EntityCreeper['Creeper'/1638, l='MpServer', x=502.50, y=37.00, z=330.50], EntityCreeper['Creeper'/1639, l='MpServer', x=503.50, y=37.00, z=330.50], EntityVillagerAdult['entity.mca.EntityVillagerAdult.name'/1636, l='MpServer', x=540.69, y=59.00, z=310.63], EntityDummy['entity.weaponmod.dummy.name'/1637, l='MpServer', x=537.50, y=59.41, z=309.50], EntitySheep['Sheep'/1659, l='MpServer', x=544.03, y=64.00, z=325.72], EntitySheep['Sheep'/1658, l='MpServer', x=544.91, y=64.00, z=326.91], EntitySheep['Sheep'/1657, l='MpServer', x=544.50, y=64.00, z=321.09], EntityChicken['Chicken'/1656, l='MpServer', x=540.47, y=49.00, z=278.47], EntityWitch['Witch'/1663, l='MpServer', x=533.69, y=29.00, z=339.88], EntitySkeleton['Skeleton'/1662, l='MpServer', x=539.28, y=30.00, z=340.72], EntitySkeleton['Skeleton'/1661, l='MpServer', x=533.31, y=29.00, z=342.44], EntitySheep['Sheep'/1660, l='MpServer', x=544.28, y=64.00, z=328.06], EntitySkeleton['Skeleton'/1651, l='MpServer', x=495.09, y=53.00, z=333.50], EntitySlime['Slime'/1650, l='MpServer', x=522.69, y=58.96, z=351.38], EntitySheep['Sheep'/1649, l='MpServer', x=544.22, y=64.00, z=322.22], EntitySheep['Sheep'/1648, l='MpServer', x=542.09, y=64.00, z=322.19], EntityBat['Bat'/1655, l='MpServer', x=531.52, y=34.49, z=281.68], EntitySheep['Sheep'/1654, l='MpServer', x=509.72, y=64.00, z=276.91], EntityCow['Cow'/1653, l='MpServer', x=497.13, y=63.00, z=282.97], EntitySheep['Sheep'/1652, l='MpServer', x=508.28, y=63.00, z=272.88], EntitySpider['Spider'/1669, l='MpServer', x=537.09, y=30.00, z=273.16], EntityHorse['Horse'/1670, l='MpServer', x=568.34, y=66.00, z=321.78], EntityWitch['Witch'/1664, l='MpServer', x=535.50, y=29.00, z=346.50], EntitySheep['Sheep'/1666, l='MpServer', x=521.75, y=67.00, z=271.84], EntityEnderman['Enderman'/1676, l='MpServer', x=547.50, y=35.00, z=365.50], EntityCreeper['Creeper'/1673, l='MpServer', x=489.50, y=33.00, z=354.50], EntityZombie['Zombie'/1672, l='MpServer', x=491.50, y=33.00, z=361.50]]
Retry entities: 0 total; []
Server brand: cauldron,craftbukkit,mcpc,fml,forge
Server type: Non-integrated multiplayer server
Stacktrace:
at net.minecraft.client.multiplayer.WorldClient.func_72914_a(WorldClient.java:368)
at net.minecraft.client.Minecraft.func_71396_d(Minecraft.java:2383)
at net.minecraft.client.Minecraft.func_99999_d(Minecraft.java:856)
at net.minecraft.client.main.Main.main(SourceFile:103)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(Unknown Source)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(Unknown Source)
at java.lang.reflect.Method.invoke(Unknown Source)
at net.minecraft.launchwrapper.Launch.launch(Launch.java:134)
at net.minecraft.launchwrapper.Launch.main(Launch.java:28)

-- System Details --
Details:
Minecraft Version: 1.7.2
Operating System: Windows 7 (x86) version 6.1
Java Version: 1.7.0_60, Oracle Corporation
Java VM Version: Java HotSpot(TM) Client VM (mixed mode, sharing), Oracle Corporation
Memory: 137822224 bytes (131 MB) / 429277184 bytes (409 MB) up to 518979584 bytes (494 MB)
JVM Flags: 2 total; -XX:HeapDumpPath=MojangTricksIntelDriversForPerformance_javaw.exe_minecraft.exe.heapdump -Xmx512M
AABB Pool Size: 8983 (503048 bytes; 0 MB) allocated, 2 (112 bytes; 0 MB) used
IntCache: cache: 0, tcache: 0, allocated: 15, tallocated: 95
FML: MCP v9.03 FML v7.2.213.1133 Minecraft Forge 10.12.2.1133 Optifine OptiFine_1.7.2_HD_D1 22 mods loaded, 22 mods active
mcp{9.03} Minecraft Coder Pack Unloaded->Constructed->Pre-initialized->Initialized->Post-initialized->Available
FML{7.2.213.1133} Forge Mod Loader Unloaded->Constructed->Pre-initialized->Initialized->Post-initialized->Available
Forge{10.12.2.1133} Minecraft Forge Unloaded->Constructed->Pre-initialized->Initialized->Post-initialized->Available
AppliedEnergistics2-Core{rv0-stable-4} AppliedEnergistics2 Core Unloaded->Constructed->Pre-initialized->Initialized->Post-initialized->Available
ThaumicTinkerer-preloader{0.1} Thaumic Tinkerer Core Unloaded->Constructed->Pre-initialized->Initialized->Post-initialized->Available
appliedenergistics2{rv0-stable-4} Applied Energistics 2 Unloaded->Constructed->Pre-initialized->Initialized->Post-initialized->Available
ArchimedesShips{1.7.2 v1.7.0} Archimedes' Ships Unloaded->Constructed->Pre-initialized->Initialized->Post-initialized->Available
BiblioCraft{1.7.1} BiblioCraft Unloaded->Constructed->Pre-initialized->Initialized->Post-initialized->Available
BiomesOPlenty{2.0.2} Biomes O' Plenty Unloaded->Constructed->Pre-initialized->Initialized->Post-initialized->Available
CarpentersBlocks{3.2.4} [Carpenter's Blocks](Carpenter's Blocks v3.2.4 - MC 1.7+.zip) Unloaded->Constructed->Pre-initialized->Initialized->Post-initialized->Available
craftguide{1.6.8.1} CraftGuide Unloaded->Constructed->Pre-initialized->Initialized->Post-initialized->Available
FoodPlus{2.9.5bU} §bFood Plus Unloaded->Constructed->Pre-initialized->Initialized->Post-initialized->Available
radixcore{1.2.0} [RadixCore](RadixCore-1.2.0 MC-1.7.2.zip) Unloaded->Constructed->Pre-initialized->Initialized->Post-initialized->Available
mca{4.0.4} [Minecraft Comes Alive](MCA-4.0.4 MC-1.7.2.zip) Unloaded->Constructed->Pre-initialized->Initialized->Post-initialized->Available
moreplayermodels{1.7.2} MorePlayerModels Unloaded->Constructed->Pre-initialized->Initialized->Post-initialized->Available
cfm{3.3.2} §6MrCrayfish's Furniture Mod Unloaded->Constructed->Pre-initialized->Initialized->Post-initialized->Available
soundscool{0.1} Sounds Cool Unloaded->Constructed->Pre-initialized->Initialized->Post-initialized->Available
Baubles{1.0.0.16} Baubles Unloaded->Constructed->Pre-initialized->Initialized->Post-initialized->Available
Thaumcraft{4.1.1.14} Thaumcraft Unloaded->Constructed->Pre-initialized->Initialized->Post-initialized->Available
ThaumicTinkerer{2.4-146} Thaumic Tinkerer Unloaded->Constructed->Pre-initialized->Initialized->Post-initialized->Available
weaponmod{1.7.2 v1.14.2} Balkon's WeaponMod Unloaded->Constructed->Pre-initialized->Initialized->Post-initialized->Available
witchery{0.19.2} Witchery Unloaded->Constructed->Pre-initialized->Initialized->Post-initialized->Available
AE2 Version: stable rv0-stable-4 for Forge 10.12.0.1024
AE2 Integration: RotaryCraft:OFF, IC2:OFF, RC:OFF, BC:OFF, MJ5:OFF, MJ6:OFF, RF:ON, RFItem:ON, MFR:OFF, DSU:OFF, FZ:OFF, Waila:OFF, CLApi:OFF, RB:OFF, InvTweaks:OFF, NEI:OFF, CraftGuide:ON, FMP:OFF
Launched Version: 1.7.2-Forge10.12.2.1133
LWJGL: 2.9.0
OpenGL: AMD Radeon HD 6530D GL version 4.1.11005 Compatibility Profile Context, ATI Technologies Inc.
Is Modded: Definitely; Client brand changed to 'fml,forge'
Type: Client (map_client.txt)
Resource Packs: []
Current Language: English (UK)
Profiler Position: N/A (disabled)
Vec3 Pool Size: 1550 (86800 bytes; 0 MB) allocated, 21 (1176 bytes; 0 MB) used
Anisotropic Filtering: Off (1)