HI,
I'm German. Sorry if my English isn't the best.
I was playing with my friend on my modded Server and then my friend's Minecraft has crashed. I have read in the crash report that it's something with the mod "Item drop physics".
Whats wrong?
Here is the Crash report:

---- Minecraft Crash Report ----
// Sorry :(

Time: 02.07.14 20:58
Description: Ticking entity

java.lang.NullPointerException: Ticking entity
at com.creativemd.itemphysic.ItemDummyContainer.update(ItemDummyContainer.java:247)
at net.minecraft.entity.item.EntityItem.func_70071_h_(EntityItem.java)
at net.minecraft.world.World.func_72866_a(World.java:2019)
at net.minecraft.world.World.func_72870_g(World.java:1983)
at net.minecraft.world.World.func_72939_s(World.java:1836)
at net.minecraft.client.Minecraft.func_71407_l(Minecraft.java:1957)
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.creativemd.itemphysic.ItemDummyContainer.update(ItemDummyContainer.java:247)
at net.minecraft.entity.item.EntityItem.func_70071_h_(EntityItem.java)
at net.minecraft.world.World.func_72866_a(World.java:2019)
at net.minecraft.world.World.func_72870_g(World.java:1983)

-- Entity being ticked --
Details:
Entity Type: Item (net.minecraft.entity.item.EntityItem)
Entity ID: 223825
Entity Name: item.tile.stone
Entity's Exact location: -10,13, 65,13, 190,84
Entity's Block location: World: (-11,65,190), Chunk: (at 5,4,14 in -1,11; contains blocks -16,0,176 to -1,255,191), Region: (-1,0; contains chunks -32,0 to -1,31, blocks -512,0,0 to -1,255,511)
Entity's Momentum: 0,00, -0,00, 0,00
Stacktrace:
at net.minecraft.world.World.func_72939_s(World.java:1836)

-- Affected level --
Details:
Level name: MpServer
All players: 2 total; [EntityOtherPlayerMP['DanmasterLP'/212670, l='MpServer', x=65,69, y=71,00, z=135,47], EntityClientPlayerMP['DasEisTeex3'/225331, l='MpServer', x=1,50, y=72,62, z=238,50]]
Chunk stats: MultiplayerChunkCache: 45, 45
Level seed: 0
Level generator: ID 00 - default, ver 1. Features enabled: false
Level generator options:
Level spawn location: World: (9,64,242), Chunk: (at 9,4,2 in 0,15; contains blocks 0,0,240 to 15,255,255), Region: (0,0; contains chunks 0,0 to 31,31, blocks 0,0,0 to 511,255,511)
Level time: 266779 game time, 361481 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: 65 total; [EntitySquid['Tintenfisch'/224777, l='MpServer', x=22,88, y=54,16, z=202,94], EntitySquid['Tintenfisch'/224776, l='MpServer', x=17,91, y=54,84, z=195,59], EntitySquid['Tintenfisch'/224779, l='MpServer', x=27,50, y=56,38, z=201,38], EntityClientPlayerMP['DasEisTeex3'/225331, l='MpServer', x=70,72, y=72,62, z=130,27], EntitySquid['Tintenfisch'/224780, l='MpServer', x=23,91, y=56,38, z=195,25], EntitySquid['Tintenfisch'/224783, l='MpServer', x=33,53, y=53,22, z=199,88], EntitySquid['Tintenfisch'/224782, l='MpServer', x=23,31, y=54,34, z=192,63], EntityCreeper['Creeper'/223817, l='MpServer', x=56,38, y=13,00, z=239,06], EntitySquid['Tintenfisch'/224775, l='MpServer', x=28,38, y=53,75, z=198,25], EntitySpider['Spinne'/223614, l='MpServer', x=-23,47, y=71,00, z=211,72], EntitySquid['Tintenfisch'/224774, l='MpServer', x=25,22, y=56,28, z=193,38], EntityItem['item.tile.stone'/223825, l='MpServer', x=-10,13, y=65,13, z=190,84], EntitySquid['Tintenfisch'/224785, l='MpServer', x=31,75, y=55,28, z=193,50], EntityOtherPlayerMP['DanmasterLP'/212670, l='MpServer', x=65,69, y=71,00, z=135,47], EntitySpider['Spinne'/223146, l='MpServer', x=62,78, y=31,00, z=210,66], EntitySheep['Schaf'/69659, l='MpServer', x=-0,53, y=64,00, z=215,34], EntitySpider['Spinne'/223147, l='MpServer', x=61,16, y=31,00, z=207,50], EntityWolf['Wolf'/69663, l='MpServer', x=-21,00, y=73,00, z=218,31], EntityZombie['Zombie'/225065, l='MpServer', x=55,50, y=14,00, z=240,50], EntitySkeleton['Skelett'/225067, l='MpServer', x=59,50, y=14,00, z=244,50], EntityZombie['Zombie'/225066, l='MpServer', x=59,50, y=14,00, z=245,50], EntitySquid['Tintenfisch'/224523, l='MpServer', x=42,09, y=56,31, z=208,28], EntitySkeleton['Skelett'/225068, l='MpServer', x=59,50, y=14,00, z=238,50], EntitySquid['Tintenfisch'/224522, l='MpServer', x=49,69, y=56,38, z=214,31], EntitySquid['Tintenfisch'/224521, l='MpServer', x=49,03, y=53,03, z=211,88], EntitySquid['Tintenfisch'/224520, l='MpServer', x=59,16, y=56,34, z=211,84], EntitySquid['Tintenfisch'/224516, l='MpServer', x=59,91, y=55,38, z=211,25], EntitySquid['Tintenfisch'/224515, l='MpServer', x=60,28, y=52,97, z=222,72], EntitySquid['Tintenfisch'/224513, l='MpServer', x=62,19, y=55,38, z=210,91], EntitySquid['Tintenfisch'/224512, l='MpServer', x=54,97, y=56,28, z=219,91], EntityHorse['Pferd'/162063, l='MpServer', x=-15,19, y=68,00, z=196,81], EntityChicken['Huhn'/162067, l='MpServer', x=-34,44, y=66,00, z=205,41], EntityBat['Fledermaus'/225416, l='MpServer', x=-29,50, y=49,00, z=204,50], EntityOtherPlayerMP['BenjomasterSun'/191412, l='MpServer', x=67,03, y=70,00, z=126,53], EntitySheep['Schaf'/162064, l='MpServer', x=-17,91, y=66,00, z=196,16], EntitySheep['Schaf'/162065, l='MpServer', x=-10,81, y=68,00, z=197,53], EntitySpider['Spinne'/225412, l='MpServer', x=-5,69, y=22,00, z=273,50], EntityZombie['Zombie'/225409, l='MpServer', x=-7,50, y=22,00, z=274,50], EntityCreeper['Creeper'/225411, l='MpServer', x=-4,30, y=22,00, z=273,50], EntityCreeper['Creeper'/225410, l='MpServer', x=-0,50, y=22,00, z=272,50], EntityItem['item.item.rottenFlesh'/223778, l='MpServer', x=-2,16, y=69,13, z=198,16], EntityCreeper['Creeper'/223794, l='MpServer', x=63,50, y=30,00, z=201,50], EntityCreeper['Creeper'/223254, l='MpServer', x=7,66, y=68,00, z=202,56], EntityCreeper['Creeper'/223793, l='MpServer', x=60,50, y=30,00, z=201,50], EntityCreeper['Creeper'/225130, l='MpServer', x=45,34, y=14,00, z=240,41], EntityBat['Fledermaus'/224198, l='MpServer', x=51,31, y=14,00, z=222,34], EntitySkeleton['Skelett'/224196, l='MpServer', x=49,50, y=14,00, z=239,50], EntitySkeleton['Skelett'/224197, l='MpServer', x=48,56, y=14,00, z=238,44], EntitySkeleton['Skelett'/224194, l='MpServer', x=52,50, y=14,00, z=239,50], EntitySkeleton['Skelett'/224195, l='MpServer', x=40,84, y=13,00, z=234,66], EntitySpider['Spinne'/224193, l='MpServer', x=46,81, y=14,00, z=241,28], EntityZombie['Zombie'/223018, l='MpServer', x=-20,50, y=20,00, z=197,97], EntityClientPlayerMP['DasEisTeex3'/225331, l='MpServer', x=1,50, y=72,62, z=238,50], EntityHorse['Pferd'/55427, l='MpServer', x=-9,56, y=62,14, z=182,88], EntityOtherPlayerMP['BenjomasterSun'/191412, l='MpServer', x=65,50, y=70,00, z=125,25], EntitySheep['Schaf'/52452, l='MpServer', x=-27,47, y=63,00, z=222,38], EntityBat['Fledermaus'/225233, l='MpServer', x=55,94, y=13,00, z=241,25], EntitySquid['Tintenfisch'/224968, l='MpServer', x=63,78, y=58,34, z=211,63], EntityWitch['Hexe'/224138, l='MpServer', x=55,50, y=15,00, z=221,50], EntityChicken['Huhn'/6724, l='MpServer', x=-16,56, y=62,49, z=184,47], EntityCreeper['Creeper'/224181, l='MpServer', x=61,53, y=30,00, z=197,94], EntityCreeper['Creeper'/223385, l='MpServer', x=55,50, y=13,00, z=242,50], EntitySheep['Schaf'/27548, l='MpServer', x=8,94, y=59,47, z=222,97], EntityCreeper['Creeper'/223384, l='MpServer', x=54,50, y=13,00, z=244,50], EntityBat['Fledermaus'/223925, l='MpServer', x=53,41, y=13,76, z=241,66]]
Retry entities: 0 total; []
Server brand: 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: 107403992 bytes (102 MB) / 291856384 bytes (278 MB) up to 518979584 bytes (494 MB)
JVM Flags: 2 total; -XX:HeapDumpPath=MojangTricksIntelDriversForPerformance_javaw.exe_minecraft.exe.heapdump -Xmx512M
AABB Pool Size: 1814 (101584 bytes; 0 MB) allocated, 745 (41720 bytes; 0 MB) used
IntCache: cache: 0, tcache: 0, allocated: 13, tallocated: 95
FML: MCP v9.03 FML v7.2.211.1124 Minecraft Forge 10.12.2.1124 Optifine OptiFine_1.7.2_HD_D1 24 mods loaded, 24 mods active
mcp{9.03} Minecraft Coder Pack Unloaded->Constructed->Pre-initialized->Initialized->Post-initialized->Available
FML{7.2.211.1124} Forge Mod Loader Unloaded->Constructed->Pre-initialized->Initialized->Post-initialized->Available
Forge{10.12.2.1124} Minecraft Forge Unloaded->Constructed->Pre-initialized->Initialized->Post-initialized->Available
itemphysic{0.8.1} ItemPhysic Unloaded->Constructed->Pre-initialized->Initialized->Post-initialized->Available
malisiscore{1.7.2-0.7.2} Malisis Core Unloaded->Constructed->Pre-initialized->Initialized->Post-initialized->Available
TeNNoX_KeyAndCodeLock{1.4} [KeyAndCodeLock]([1.7.2] KeyAndCodeLock-1.7.2-1.4.jar) Unloaded->Constructed->Pre-initialized->Initialized->Post-initialized->Available
bspkrsCore{6.11} bspkrsCore Unloaded->Constructed->Pre-initialized->Initialized->Post-initialized->Available
ArmorStatusHUD{1.26} ArmorStatusHUD Unloaded->Constructed->Pre-initialized->Initialized->Post-initialized->Available
DirectionHUD{1.22} DirectionHUD Unloaded->Constructed->Pre-initialized->Initialized->Post-initialized->Available
StatusEffectHUD{1.25} StatusEffectHUD Unloaded->Constructed->Pre-initialized->Initialized->Post-initialized->Available
Treecapitator{1.7.2} Treecapitator Unloaded->Constructed->Pre-initialized->Initialized->Post-initialized->Available
craftguide{1.6.8.1} CraftGuide Unloaded->Constructed->Pre-initialized->Initialized->Post-initialized->Available
eplus{1.7.2-2.0.3} Enchanting Plus Unloaded->Constructed->Pre-initialized->Initialized->Post-initialized->Available
guilib{1.0.7.2} GUI Library Unloaded->Constructed->Pre-initialized->Initialized->Post-initialized->Available
PaintingSelGui{1.7.2.0} PaintingSelectionGui Unloaded->Constructed->Pre-initialized->Initialized->Post-initialized->Available
inventorytweaks{1.57-116} Inventory Tweaks Unloaded->Constructed->Pre-initialized->Initialized->Post-initialized->Available
SlimevoidLib{2.0.4.6} Slimevoid Library Unloaded->Constructed->Pre-initialized->Initialized->Post-initialized->Available
LittleBlocks{2.2.4.1} Little Blocks Unloaded->Constructed->Pre-initialized->Initialized->Post-initialized->Available
malisisdoors{1.7.2-0.6.4} Malisis' Doors Unloaded->Constructed->Pre-initialized->Initialized->Post-initialized->Available
MoreSwordsMod{2.6.2} [More Swords Mod](More Swords Mod 2.6.2 For 1.7.2.jar) Unloaded->Constructed->Pre-initialized->Initialized->Post-initialized->Available
moreplayermodels{1.7.2} MorePlayerModels Unloaded->Constructed->Pre-initialized->Initialized->Post-initialized->Available
RedstonePasteMod{1.6.1} Redstone Paste Unloaded->Constructed->Pre-initialized->Initialized->Post-initialized->Available
TF2Teleporter{1.7.2} TF2 Teleporter Unloaded->Constructed->Pre-initialized->Initialized->Post-initialized->Available
WirelessRedstoneCore{1.8.0.0} Wireless Redstone Unloaded->Constructed->Pre-initialized->Initialized->Post-initialized->Available
Launched Version: 1.7.2-Forge10.12.2.1124
LWJGL: 2.9.0
OpenGL: GeForce GT 520M/PCI/SSE2 GL version 4.1.0, NVIDIA Corporation
Is Modded: Definitely; Client brand changed to 'fml,forge'
Type: Client (map_client.txt)
Resource Packs: [64px_v2.8.2_[mc1.6.2]_W1-Pack]
Current Language: Deutsch (Deutschland)
Profiler Position: N/A (disabled)
Vec3 Pool Size: 7485 (419160 bytes; 0 MB) allocated, 1815 (101640 bytes; 0 MB) used
Anisotropic Filtering: Off (1)

item drop physics is a fake of my mod item physics. So you should only have item physics installed.

The error is still there.

Does this error still come up?