Whenever I try to open the mods tab, Minecraft crashes. Is this a problem with forge or the mods? I am running Forge 10.12.0.1024. Here's the error report:

 

---- Minecraft Crash Report ----

// Would you like a cupcake?

 

Time: 2/26/14 7:20 PM

Description: Rendering screen

 

java.lang.NullPointerException: Rendering screen

at net.minecraft.client.gui.FontRenderer.func_78262_a(SourceFile:506)

at net.minecraft.client.gui.FontRenderer.func_78269_a(SourceFile:495)

at cpw.mods.fml.client.GuiSlotModList.drawSlot(GuiSlotModList.java:82)

at cpw.mods.fml.client.GuiScrollingList.drawScreen(GuiScrollingList.java:324)

at cpw.mods.fml.client.GuiModList.func_73863_a(GuiModList.java:145)

at net.minecraft.client.renderer.EntityRenderer.func_78480_b(EntityRenderer.java:1109)

at net.minecraft.client.Minecraft.func_71411_J(Minecraft.java:981)

at net.minecraft.client.Minecraft.func_99999_d(Minecraft.java:870)

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 net.minecraft.client.gui.FontRenderer.func_78262_a(SourceFile:506)

at net.minecraft.client.gui.FontRenderer.func_78269_a(SourceFile:495)

at cpw.mods.fml.client.GuiSlotModList.drawSlot(GuiSlotModList.java:82)

at cpw.mods.fml.client.GuiScrollingList.drawScreen(GuiScrollingList.java:324)

at cpw.mods.fml.client.GuiModList.func_73863_a(GuiModList.java:145)

 

-- Screen render details --

Details:

Screen name: cpw.mods.fml.client.GuiModList

Mouse location: Scaled: (269, 173). Absolute: (538, 132)

Screen size: Scaled: (427, 240). Absolute: (854, 480). Scale factor of 2

Stacktrace:

at net.minecraft.client.renderer.EntityRenderer.func_78480_b(EntityRenderer.java:1109)

at net.minecraft.client.Minecraft.func_71411_J(Minecraft.java:981)

at net.minecraft.client.Minecraft.func_99999_d(Minecraft.java:870)

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 (amd64) version 6.1

Java Version: 1.7.0_51, Oracle Corporation

Java VM Version: Java HotSpot 64-Bit Server VM (mixed mode), Oracle Corporation

Memory: 73505080 bytes (70 MB) / 364380160 bytes (347 MB) up to 1908932608 bytes (1820 MB)

JVM Flags: 2 total; -XX:HeapDumpPath=MojangTricksIntelDriversForPerformance_javaw.exe_minecraft.exe.heapdump -Xmx2G

AABB Pool Size: 0 (0 bytes; 0 MB) allocated, 0 (0 bytes; 0 MB) used

IntCache: cache: 0, tcache: 0, allocated: 0, tallocated: 0

FML: MCP v9.01-pre FML v7.2.116.1024 Minecraft Forge 10.12.0.1024 5 mods loaded, 5 mods active

mcp{8.09} [Minecraft Coder Pack] (minecraft.jar) Unloaded->Constructed->Pre-initialized->Initialized->Post-initialized->Available

FML{7.2.116.1024} [Forge Mod Loader] (forge-1.7.2-10.12.0.1024.jar) Unloaded->Constructed->Pre-initialized->Initialized->Post-initialized->Available

Forge{10.12.0.1024} [Minecraft Forge] (forge-1.7.2-10.12.0.1024.jar) Unloaded->Constructed->Pre-initialized->Initialized->Post-initialized->Available

DamageIndicatorsMod{3.0.0.0} [Damage Indicators] ([1.7.2]DamageIndicatorsMod-3.0.0.jar) Unloaded->Constructed->Pre-initialized->Initialized->Post-initialized->Available

IronChest{6.0.4.713} [iron Chest] (ironchest-1.7.2-6.0.4.713-universal.jar) Unloaded->Constructed->Pre-initialized->Initialized->Post-initialized->Available

Launched Version: 1.7.2-Forge10.12.0.1024

LWJGL: 2.9.0

OpenGL: GeForce GTX 650/PCIe/SSE2 GL version 4.4.0, NVIDIA Corporation

Is Modded: Definitely; Client brand changed to 'fml,forge'

Type: Client (map_client.txt)

Resource Packs: []

Current Language: English (US)

Profiler Position: N/A (disabled)

Vec3 Pool Size: ~~ERROR~~ NullPointerException: null

Anisotropic Filtering: On (16)

1) One or more things you have installed is editing the FontRenderer class causing the line numbers to not match, so there isn't anything we can EXACTLY say.

2) Most likely one or more of your mods that are instlled are broken and have invalid mcmod.info files.

If you are returning null on getTabIconItem() instead of an item it could cause this.

If you are returning null on getTabIconItem() instead of an item it could cause this.

 

I think he is talking about the 'Mods' button on the main menu, I think.

Without a full log, it's hard to say what led up to the error.