I'm currently using Minecraft 1.52 with Forge version 7.8.0.690. Clean install, no mods, except forge itself. No texture pack running nor non-default graphics settings.

 

When dragging an item in the inventory and releasing it improperly, say, for example, releasing it onto the gray field near the crafting box, the item snaps back to its original position(as it should), and then the game immediately crashes.

 

I have been getting this ever since the first forge update for 1.52. I have removed all mods, except for forge, and it still happens. In a completely clean install of 1.52, it does not happen. This is very specifically a problem with forge.

 

I have a few dozen error logs, I shall include only the newest one at this time, as it is the absolutely clean install of 1.52+7.8.0.690, with no other mods involved.

 

 

---- Minecraft Crash Report ----
// Oh - I know what I did wrong!

Time: 5/9/13 2:39 AM
Description: Rendering screen

java.lang.NullPointerException
at net.minecraft.client.gui.inventory.GuiContainer.func_85044_b(GuiContainer.java:207)
at net.minecraft.client.gui.inventory.GuiContainer.func_73863_a(GuiContainer.java:186)
at net.minecraft.client.renderer.InventoryEffectRenderer.func_73863_a(SourceFile:31)
at net.minecraft.client.gui.inventory.GuiContainerCreative.func_73863_a(GuiContainerCreative.java:664)
at net.minecraft.client.renderer.EntityRenderer.func_78480_b(EntityRenderer.java:1021)
at net.minecraft.client.Minecraft.func_71411_J(Minecraft.java:871)
at net.minecraft.client.Minecraft.run(Minecraft.java:760)
at java.lang.Thread.run(Unknown Source)


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

-- Head --
Stacktrace:
at net.minecraft.client.gui.inventory.GuiContainer.func_85044_b(GuiContainer.java:207)
at net.minecraft.client.gui.inventory.GuiContainer.func_73863_a(GuiContainer.java:186)
at net.minecraft.client.renderer.InventoryEffectRenderer.func_73863_a(SourceFile:31)
at net.minecraft.client.gui.inventory.GuiContainerCreative.func_73863_a(GuiContainerCreative.java:664)

-- Screen render details --
Details:
Screen name: net.minecraft.client.gui.inventory.GuiContainerCreative
Mouse location: Scaled: (262, 81). Absolute: (524, 317)
Screen size: Scaled: (427, 240). Absolute: (854, 480). Scale factor of 2

-- Affected level --
Details:
Level name: MpServer
All players: 1 total; [EntityClientPlayerMP['AstralCrafter'/308, l='MpServer', x=62.19, y=64.62, z=213.93]]
Chunk stats: MultiplayerChunkCache: 441
Level seed: 0
Level generator: ID 00 - default, ver 1. Features enabled: false
Level generator options: 
Level spawn location: World: (-184,64,232), Chunk: (at 8,4,8 in -12,14; contains blocks -192,0,224 to -177,255,239), Region: (-1,0; contains chunks -32,0 to -1,31, blocks -512,0,0 to -1,255,511)
Level time: 46088 game time, 13169 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: 128 total; [EntityCreeper['Creeper'/283, l='MpServer', x=8.97, y=46.00, z=140.34], EntityZombie['Zombie'/282, l='MpServer', x=12.88, y=45.00, z=134.72], EntitySlime['Slime'/287, l='MpServer', x=11.38, y=55.48, z=165.63], EntitySlime['Slime'/286, l='MpServer', x=13.69, y=54.00, z=166.31], EntitySlime['Slime'/285, l='MpServer', x=12.22, y=54.47, z=172.78], EntitySkeleton['Skeleton'/284, l='MpServer', x=4.06, y=44.00, z=151.53], EntitySkeleton['Skeleton'/258, l='MpServer', x=-13.31, y=24.87, z=147.41], EntitySkeleton['Skeleton'/259, l='MpServer', x=-9.50, y=55.00, z=172.50], EntityChicken['Chicken'/256, l='MpServer', x=-13.41, y=64.00, z=140.41], EntityCreeper['Creeper'/262, l='MpServer', x=-0.94, y=47.00, z=180.47], EntityEnderman['Enderman'/263, l='MpServer', x=-5.56, y=36.00, z=186.24], EntitySlime['Slime'/260, l='MpServer', x=-5.31, y=57.01, z=162.68], EntitySkeleton['Skeleton'/261, l='MpServer', x=-3.25, y=21.00, z=190.78], EntityChicken['Chicken'/266, l='MpServer', x=-0.47, y=57.00, z=202.84], EntityChicken['Chicken'/267, l='MpServer', x=-0.53, y=54.00, z=215.41], EntityChicken['Chicken'/264, l='MpServer', x=-13.44, y=62.36, z=198.56], EntityItem['item.item.egg'/304, l='MpServer', x=0.03, y=54.13, z=213.51], EntityEnderman['Enderman'/309, l='MpServer', x=54.63, y=12.00, z=217.63], EntityEnderman['Enderman'/311, l='MpServer', x=54.50, y=12.00, z=220.38], EntityEnderman['Enderman'/310, l='MpServer', x=53.81, y=13.30, z=212.67], EntityEnderman['Enderman'/312, l='MpServer', x=51.53, y=11.00, z=223.63], EntitySkeleton['Skeleton'/315, l='MpServer', x=20.41, y=47.00, z=138.84], EntityChicken['Chicken'/317, l='MpServer', x=15.35, y=67.00, z=167.42], EntitySlime['Slime'/316, l='MpServer', x=16.69, y=54.00, z=168.31], EntityChicken['Chicken'/319, l='MpServer', x=31.47, y=64.00, z=192.19], EntityItem['item.item.egg'/318, l='MpServer', x=16.25, y=67.13, z=169.53], EntityChicken['Chicken'/288, l='MpServer', x=8.06, y=68.00, z=172.13], EntityChicken['Chicken'/289, l='MpServer', x=5.28, y=67.00, z=172.56], EntityItem['item.item.egg'/290, l='MpServer', x=7.78, y=67.13, z=167.53], EntitySkeleton['Skeleton'/291, l='MpServer', x=0.50, y=22.00, z=199.50], EntityCreeper['Creeper'/292, l='MpServer', x=4.50, y=22.00, z=196.50], EntityItem['item.item.egg'/293, l='MpServer', x=0.13, y=53.13, z=205.97], EntityItem['item.item.egg'/294, l='MpServer', x=2.63, y=61.13, z=199.91], EntityItem['item.item.egg'/295, l='MpServer', x=9.28, y=56.13, z=206.72], EntityCreeper['Creeper'/296, l='MpServer', x=14.50, y=49.00, z=202.50], EntityBat['Bat'/297, l='MpServer', x=10.75, y=51.00, z=195.25], EntityChicken['Chicken'/298, l='MpServer', x=4.44, y=68.00, z=198.47], EntityChicken['Chicken'/299, l='MpServer', x=-0.64, y=67.00, z=197.15], EntityItem['item.item.egg'/300, l='MpServer', x=5.88, y=68.13, z=194.13], EntityChicken['Chicken'/301, l='MpServer', x=14.91, y=68.00, z=198.38], EntityZombie['Zombie'/302, l='MpServer', x=10.59, y=47.00, z=218.00], EntityChicken['Chicken'/303, l='MpServer', x=9.53, y=56.00, z=208.44], EntityCreeper['Creeper'/343, l='MpServer', x=42.50, y=34.00, z=200.50], EntityCreeper['Creeper'/342, l='MpServer', x=47.66, y=46.05, z=166.91], EntityItem['item.item.egg'/338, l='MpServer', x=25.13, y=67.13, z=197.69], EntityItem['item.item.egg'/337, l='MpServer', x=21.66, y=66.13, z=205.13], EntityChicken['Chicken'/336, l='MpServer', x=26.03, y=67.00, z=193.88], EntitySquid['Squid'/347, l='MpServer', x=39.80, y=58.00, z=263.50], EntitySquid['Squid'/346, l='MpServer', x=46.73, y=56.05, z=252.92], EntitySkeleton['Skeleton'/345, l='MpServer', x=37.65, y=25.84, z=224.24], EntitySkeleton['Skeleton'/344, l='MpServer', x=34.47, y=29.00, z=223.88], EntityCreeper['Creeper'/326, l='MpServer', x=27.50, y=64.00, z=176.50], EntityItem['item.item.egg'/327, l='MpServer', x=22.94, y=68.13, z=189.91], EntityChicken['Chicken'/324, l='MpServer', x=23.88, y=68.00, z=181.28], EntityChicken['Chicken'/325, l='MpServer', x=30.44, y=65.00, z=186.47], EntityZombie['Zombie'/322, l='MpServer', x=25.31, y=56.00, z=180.50], EntityCreeper['Creeper'/323, l='MpServer', x=25.49, y=56.00, z=181.50], EntityItem['item.item.egg'/320, l='MpServer', x=30.97, y=63.13, z=190.88], EntityZombie['Zombie'/321, l='MpServer', x=31.00, y=57.00, z=179.59], EntityChicken['Chicken'/334, l='MpServer', x=24.10, y=68.00, z=191.00], EntityChicken['Chicken'/335, l='MpServer', x=21.44, y=66.00, z=206.34], EntityItem['item.item.egg'/332, l='MpServer', x=26.56, y=63.13, z=192.13], EntityChicken['Chicken'/333, l='MpServer', x=26.66, y=67.00, z=194.19], EntityChicken['Chicken'/330, l='MpServer', x=27.70, y=63.00, z=191.04], EntityItem['item.item.egg'/331, l='MpServer', x=19.47, y=61.13, z=199.72], EntityItem['item.item.egg'/328, l='MpServer', x=29.44, y=64.13, z=190.09], EntityChicken['Chicken'/329, l='MpServer', x=18.59, y=61.00, z=200.41], EntityCreeper['Creeper'/373, l='MpServer', x=70.22, y=31.00, z=189.69], EntityChicken['Chicken'/372, l='MpServer', x=65.44, y=62.44, z=179.56], EntitySpider['Spider'/375, l='MpServer', x=74.97, y=19.00, z=199.84], EntitySkeleton['Skeleton'/374, l='MpServer', x=70.09, y=49.00, z=190.66], EntityItem['item.item.egg'/369, l='MpServer', x=64.38, y=64.13, z=171.53], EntityChicken['Chicken'/368, l='MpServer', x=64.53, y=64.00, z=173.47], EntitySkeleton['Skeleton'/371, l='MpServer', x=72.53, y=40.00, z=186.84], EntityBat['Bat'/370, l='MpServer', x=74.84, y=21.00, z=194.74], EntityChicken['Chicken'/381, l='MpServer', x=70.59, y=62.45, z=235.41], EntitySkeleton['Skeleton'/380, l='MpServer', x=70.98, y=54.00, z=204.63], EntityBat['Bat'/377, l='MpServer', x=74.47, y=19.70, z=202.58], EntityZombie['Zombie'/376, l='MpServer', x=76.50, y=20.00, z=206.50], EntityZombie['Zombie'/379, l='MpServer', x=77.54, y=31.01, z=195.31], EntityBat['Bat'/378, l='MpServer', x=66.59, y=43.10, z=197.75], EntityBat['Bat'/356, l='MpServer', x=59.52, y=27.21, z=176.65], EntitySpider['Spider'/357, l='MpServer', x=53.00, y=36.00, z=183.66], EntityItem['item.item.egg'/358, l='MpServer', x=58.16, y=64.13, z=187.16], EntityBat['Bat'/359, l='MpServer', x=59.75, y=35.10, z=203.53], EntityCreeper['Creeper'/354, l='MpServer', x=45.56, y=49.00, z=161.99], EntityBat['Bat'/355, l='MpServer', x=56.44, y=29.10, z=189.56], EntitySquid['Squid'/364, l='MpServer', x=54.02, y=58.18, z=244.87], EntitySpider['Spider'/366, l='MpServer', x=76.75, y=46.00, z=170.81], EntitySpider['Spider'/367, l='MpServer', x=79.03, y=46.00, z=171.16], EntityCreeper['Creeper'/360, l='MpServer', x=62.03, y=52.00, z=195.56], EntityCreeper['Creeper'/361, l='MpServer', x=59.94, y=51.00, z=194.75], EntitySquid['Squid'/362, l='MpServer', x=53.73, y=57.45, z=242.29], EntitySquid['Squid'/363, l='MpServer', x=54.41, y=57.25, z=238.48], EntityBat['Bat'/410, l='MpServer', x=118.30, y=21.85, z=229.69], EntitySkeleton['Skeleton'/415, l='MpServer', x=132.50, y=42.00, z=211.97], EntityBat['Bat'/402, l='MpServer', x=111.01, y=42.08, z=186.55], EntityItem['item.item.egg'/403, l='MpServer', x=98.97, y=63.13, z=213.97], EntityItem['item.item.egg'/400, l='MpServer', x=86.84, y=60.13, z=229.13], EntityBat['Bat'/401, l='MpServer', x=100.27, y=43.81, z=148.51], EntityChicken['Chicken'/404, l='MpServer', x=96.81, y=63.00, z=215.78], EntityBat['Bat'/405, l='MpServer', x=110.53, y=20.00, z=232.08], EntityZombie['Zombie'/395, l='MpServer', x=81.50, y=31.00, z=201.50], EntityZombie['Zombie'/394, l='MpServer', x=82.50, y=31.00, z=202.50], EntitySkeleton['Skeleton'/393, l='MpServer', x=80.56, y=19.00, z=206.94], EntityChicken['Chicken'/392, l='MpServer', x=87.56, y=63.00, z=191.56], EntityBat['Bat'/399, l='MpServer', x=93.25, y=34.10, z=208.75], EntityCreeper['Creeper'/398, l='MpServer', x=88.50, y=17.00, z=212.88], EntityItem['item.item.egg'/397, l='MpServer', x=88.19, y=63.13, z=193.47], EntityZombie['Zombie'/396, l='MpServer', x=80.94, y=31.00, z=200.69], EntityOcelot['Ocelot'/387, l='MpServer', x=86.20, y=73.00, z=140.12], EntityOcelot['Ocelot'/386, l='MpServer', x=86.81, y=73.00, z=140.69], EntityOcelot['Ocelot'/385, l='MpServer', x=80.04, y=71.00, z=139.54], EntityCreeper['Creeper'/391, l='MpServer', x=88.47, y=36.00, z=185.00], EntityCreeper['Creeper'/390, l='MpServer', x=82.56, y=46.00, z=166.92], EntityCreeper['Creeper'/389, l='MpServer', x=85.94, y=47.00, z=164.97], EntityZombie['Zombie'/388, l='MpServer', x=95.50, y=46.00, z=171.50], EntitySkeleton['Skeleton'/417, l='MpServer', x=133.59, y=39.00, z=219.41], EntitySkeleton['Skeleton'/416, l='MpServer', x=129.62, y=41.00, z=215.06], EntityBat['Bat'/419, l='MpServer', x=133.50, y=41.10, z=232.56], EntityZombie['Zombie'/418, l='MpServer', x=139.88, y=12.00, z=232.31], EntitySkeleton['Skeleton'/420, l='MpServer', x=132.50, y=39.00, z=225.26], EntityChicken['Chicken'/221, l='MpServer', x=-18.55, y=64.47, z=139.53], EntityClientPlayerMP['AstralCrafter'/308, l='MpServer', x=62.19, y=64.62, z=213.93], EntityChicken['Chicken'/236, l='MpServer', x=-11.44, y=63.00, z=250.30], EntityBat['Bat'/225, l='MpServer', x=-16.25, y=15.81, z=162.22], EntityCreeper['Creeper'/254, l='MpServer', x=-10.50, y=20.00, z=140.50], EntityBat['Bat'/255, l='MpServer', x=-7.65, y=18.00, z=145.57]]
Retry entities: 0 total; []
Stacktrace:
at net.minecraft.client.multiplayer.WorldClient.func_72914_a(WorldClient.java:441)
at net.minecraft.client.Minecraft.func_71396_d(Minecraft.java:2414)
at net.minecraft.client.Minecraft.run(Minecraft.java:776)
at java.lang.Thread.run(Unknown Source)

-- System Details --
Details:
Minecraft Version: 1.5.2
Operating System: Windows 7 (amd64) version 6.1
Java Version: 1.7.0_17, Oracle Corporation
Java VM Version: Java HotSpot(TM) 64-Bit Server VM (mixed mode), Oracle Corporation
Memory: 319884472 bytes (305 MB) / 628228096 bytes (599 MB) up to 954466304 bytes (910 MB)
JVM Flags: 2 total; -Xms512m -Xmx1024m
AABB Pool Size: 18931 (1060136 bytes; 1 MB) allocated, 2684 (150304 bytes; 0 MB) used
Suspicious classes: FML and Forge are installed
IntCache: cache: 0, tcache: 0, allocated: 1, tallocated: 63
FML: MCP v7.51 FML v5.2.5.690 Minecraft Forge 7.8.0.690 3 mods loaded, 3 mods active
mcp{7.44} [Minecraft Coder Pack] (minecraft.jar) Unloaded->Constructed->Pre-initialized->Initialized->Post-initialized->Available->Available->Available->Available
FML{5.2.5.690} [Forge Mod Loader] (coremods) Unloaded->Constructed->Pre-initialized->Initialized->Post-initialized->Available->Available->Available->Available
Forge{7.8.0.690} [Minecraft Forge] (coremods) Unloaded->Constructed->Pre-initialized->Initialized->Post-initialized->Available->Available->Available->Available
LWJGL: 2.4.2
OpenGL: GeForce GT 240/PCIe/SSE2 GL version 3.3.0, NVIDIA Corporation
Is Modded: Definitely; Client brand changed to 'fml,forge'
Type: Client (map_client.txt)
Texture Pack: Default
Profiler Position: N/A (disabled)
Vec3 Pool Size: 5077 (284312 bytes; 0 MB) allocated, 1031 (57736 bytes; 0 MB) used

 

I was unable to reproduce as I couldn't get minecraft to do the 'invalid' drags that you described, but I added some null protection in so it should be fine now.

Easiest way to reproduce "invalid drag" error: Try putting a block of dirt as your helmet.

 

However: as of version 691, the error is fixed. Thanks!!