Flan's mod -Manus ww2 package crash

Bonjour , j'ai installé le mod Flan's et un flopée de pack tout fonctionnais très bien mais au moment de poser un Sherman crash , j'avais remarqué que les mitrailleuses étais aussi invisible .
Voici le rapport d'erreur :
---- Minecraft Crash Report ----
// There are four lights!

Time: 07/04/15 20:57
Description: Ticking memory connection

java.lang.NullPointerException: Ticking memory connection
at com.flansmod.common.driveables.EntityWheel.initPosition(EntityWheel.java:47)
at com.flansmod.common.driveables.EntityWheel.<init>(EntityWheel.java:42)
at com.flansmod.common.driveables.EntityDriveable.initType(EntityDriveable.java:129)
at com.flansmod.common.driveables.EntityVehicle.initType(EntityVehicle.java:74)
at com.flansmod.common.driveables.EntityVehicle.<init>(EntityVehicle.java:68)
at com.flansmod.common.driveables.ItemVehicle.func_77659_a(ItemVehicle.java:136)
at net.minecraft.item.ItemStack.func_77957_a(ItemStack.java:146)
at net.minecraft.server.management.ItemInWorldManager.func_73085_a(ItemInWorldManager.java:316)
at net.minecraft.network.NetHandlerPlayServer.func_147346_a(NetHandlerPlayServer.java:539)
at net.minecraft.network.play.client.C08PacketPlayerBlockPlacement.func_148833_a(SourceFile:60)
at net.minecraft.network.play.client.C08PacketPlayerBlockPlacement.func_148833_a(SourceFile:9)
at net.minecraft.network.NetworkManager.func_74428_b(NetworkManager.java:212)
at net.minecraft.network.NetworkSystem.func_151269_c(NetworkSystem.java:165)
at net.minecraft.server.MinecraftServer.func_71190_q(MinecraftServer.java:659)
at net.minecraft.server.MinecraftServer.func_71217_p(MinecraftServer.java:547)
at net.minecraft.server.integrated.IntegratedServer.func_71217_p(IntegratedServer.java:111)
at net.minecraft.server.MinecraftServer.run(MinecraftServer.java:427)
at net.minecraft.server.MinecraftServer$2.run(MinecraftServer.java:685)


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

-- Head --
Stacktrace:
at com.flansmod.common.driveables.EntityWheel.initPosition(EntityWheel.java:47)
at com.flansmod.common.driveables.EntityWheel.<init>(EntityWheel.java:42)
at com.flansmod.common.driveables.EntityDriveable.initType(EntityDriveable.java:129)
at com.flansmod.common.driveables.EntityVehicle.initType(EntityVehicle.java:74)
at com.flansmod.common.driveables.EntityVehicle.<init>(EntityVehicle.java:68)
at com.flansmod.common.driveables.ItemVehicle.func_77659_a(ItemVehicle.java:136)
at net.minecraft.item.ItemStack.func_77957_a(ItemStack.java:146)
at net.minecraft.server.management.ItemInWorldManager.func_73085_a(ItemInWorldManager.java:316)
at net.minecraft.network.NetHandlerPlayServer.func_147346_a(NetHandlerPlayServer.java:539)
at net.minecraft.network.play.client.C08PacketPlayerBlockPlacement.func_148833_a(SourceFile:60)
at net.minecraft.network.play.client.C08PacketPlayerBlockPlacement.func_148833_a(SourceFile:9)
at net.minecraft.network.NetworkManager.func_74428_b(NetworkManager.java:212)

-- Ticking connection --
Details:
Connection: net.minecraft.network.NetworkManager@7895ec8e
Stacktrace:
at net.minecraft.network.NetworkSystem.func_151269_c(NetworkSystem.java:165)
at net.minecraft.server.MinecraftServer.func_71190_q(MinecraftServer.java:659)
at net.minecraft.server.MinecraftServer.func_71217_p(MinecraftServer.java:547)
at net.minecraft.server.integrated.IntegratedServer.func_71217_p(IntegratedServer.java:111)
at net.minecraft.server.MinecraftServer.run(MinecraftServer.java:427)
at net.minecraft.server.MinecraftServer$2.run(MinecraftServer.java:685)

-- System Details --
Details:
Minecraft Version: 1.7.10
Operating System: Windows 7 (amd64) version 6.1
Java Version: 1.8.0_25, Oracle Corporation
Java VM Version: Java HotSpot(TM) 64-Bit Server VM (mixed mode), Oracle Corporation
Memory: 117137152 bytes (111 MB) / 374919168 bytes (357 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
AABB Pool Size: 0 (0 bytes; 0 MB) allocated, 0 (0 bytes; 0 MB) used
IntCache: cache: 0, tcache: 0, allocated: 12, tallocated: 94
FML: MCP v9.05 FML v7.10.85.1230 Minecraft Forge 10.13.2.1230 4 mods loaded, 4 mods active
mcp{9.05} [Minecraft Coder Pack] (minecraft.jar) Unloaded->Constructed->Pre-initialized->Initialized->Post-initialized->Available->Available->Available->Available
FML{7.10.85.1230} [Forge Mod Loader] (forge-1.7.10-10.13.2.1230.jar) Unloaded->Constructed->Pre-initialized->Initialized->Post-initialized->Available->Available->Available->Available
Forge{10.13.2.1230} [Minecraft Forge] (forge-1.7.10-10.13.2.1230.jar) Unloaded->Constructed->Pre-initialized->Initialized->Post-initialized->Available->Available->Available->Available
flansmod{4.8.0} [Flan's Mod] (Flans Mod-1.7.10-4.8.0.jar) Unloaded->Constructed->Pre-initialized->Initialized->Post-initialized->Available->Available->Available->Available
Profiler Position: N/A (disabled)
Vec3 Pool Size: 0 (0 bytes; 0 MB) allocated, 0 (0 bytes; 0 MB) used
Player Count: 1 / 8; [EntityPlayerMP['thebroch'/336, l='Nouveau monde', x=243,48, y=67,00, z=163,78]]
Type: Integrated Server (map_client.txt)
Is Modded: Definitely; Client brand changed to 'fml,forge'

merci de votre aide :)