When i try to use the slingshot from the VariedCommodities mod the game crashes

This is the error from the crash report:

Description: Rendering entity in world

java.lang.NullPointerException: Rendering entity in world
at techguns.client.render.ItemRenderHack.shouldRenderItem(ItemRenderHack.java:124)
at techguns.client.render.ItemRenderHack.renderItem(ItemRenderHack.java:54)
at net.minecraft.client.renderer.RenderItem.func_181564_a(RenderItem.java:238)
at codechicken.lib.render.item.CCRenderItem.func_181564_a(CCRenderItem.java:293)
at noppes.vc.client.renderer.RenderProjectile.doRenderProjectile(RenderProjectile.java:126)
at noppes.vc.client.renderer.RenderProjectile.func_76986_a(RenderProjectile.java:147)
at net.minecraft.client.renderer.entity.RenderManager.func_188391_a(RenderManager.java:384)
at net.minecraft.client.renderer.entity.RenderManager.func_188388_a(RenderManager.java:368)
at net.minecraft.client.renderer.RenderGlobal.func_180446_a(RenderGlobal.java:628)
at net.minecraft.client.renderer.EntityRenderer.func_175068_a(EntityRenderer.java:1347)
at net.minecraft.client.renderer.EntityRenderer.func_78471_a(EntityRenderer.java:1259)
at net.minecraft.client.renderer.EntityRenderer.func_181560_a(EntityRenderer.java:1062)
at net.minecraft.client.Minecraft.func_71411_J(Minecraft.java:1119)
at net.minecraft.client.Minecraft.func_99999_d(Minecraft.java:398)
at net.minecraft.client.main.Main.main(SourceFile:123)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
at java.lang.reflect.Method.invoke(Method.java:497)
at net.minecraft.launchwrapper.Launch.launch(Launch.java:135)
at net.minecraft.launchwrapper.Launch.main(Launch.java:28)
at org.prismlauncher.launcher.impl.StandardLauncher.launch(StandardLauncher.java:105)
at org.prismlauncher.EntryPoint.listen(EntryPoint.java:129)
at org.prismlauncher.EntryPoint.main(EntryPoint.java:70)

No Mixin Metadata is found in the Stacktrace.

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

-- Head --
Thread: Client thread
Stacktrace:
at techguns.client.render.ItemRenderHack.shouldRenderItem(ItemRenderHack.java:124)
at techguns.client.render.ItemRenderHack.renderItem(ItemRenderHack.java:54)
at net.minecraft.client.renderer.RenderItem.func_181564_a(RenderItem.java:238)
at codechicken.lib.render.item.CCRenderItem.func_181564_a(CCRenderItem.java:293)
at noppes.vc.client.renderer.RenderProjectile.doRenderProjectile(RenderProjectile.java:126)
at noppes.vc.client.renderer.RenderProjectile.func_76986_a(RenderProjectile.java:147)

-- Entity being rendered --
Details:
Entity Type: variedcommodities:vcprojectile (noppes.vc.EntityProjectile)
Entity ID: 385
Entity Name: entity.VCProjectile.name
Entity's Exact location: -149.45, 74.64, -168.61
Entity's Block location: World: (-150,74,-169), Chunk: (at 10,4,7 in -10,-11; contains blocks -160,0,-176 to -145,255,-161), Region: (-1,-1; contains chunks -32,-32 to -1,-1, blocks -512,0,-512 to -1,255,-1)
Entity's Momentum: -0.87, -1.05, 0.26
Entity's Passengers: []
Entity's Vehicle: ERROR NullPointerException: null