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MC-37203

Hopper: java.lang.ClassCastException: bit cannot be cast to fm

This is an automatically generated report based from the following crash: http://hopper.minecraft.net/crashes/minecraft/MCX-465195/

Crash:

java.lang.ClassCastException: bit cannot be cast to fm
	at gu.a(SourceFile:13)
	at ef.a(SourceFile:164)
	at azd.o(SourceFile:1566)
	at azd.ad(SourceFile:753)
	at azd.e(SourceFile:704)
	at net.minecraft.client.main.Main.main(SourceFile:103)

The following is the first clean report made public about this crash:

---- Minecraft Crash Report ----
// Don't do that.

Time: 10/25/13 3:12 PM
Description: Unexpected error

java.lang.ClassCastException: bit cannot be cast to fm
	at gu.a(SourceFile:13)
	at ef.a(SourceFile:164)
	at azd.o(SourceFile:1566)
	at azd.ad(SourceFile:753)
	at azd.e(SourceFile:704)
	at net.minecraft.client.main.Main.main(SourceFile:103)


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

-- System Details --
Details:
	Minecraft Version: 1.7.2
	Operating System: Windows 7 (x86) version 6.1
	Java Version: 1.7.0_40, Oracle Corporation
	Java VM Version: Java HotSpot(TM) Client VM (mixed mode, sharing), Oracle Corporation
	Memory: 94753040 bytes (90 MB) / 271921152 bytes (259 MB) up to 518979584 bytes (494 MB)
	JVM Flags: 2 total; -XX:HeapDumpPath=MojangTricksIntelDriversForPerformance_javaw.exe_minecraft.exe.heapdump -Xmx512M
	AABB Pool Size: 0 (0 bytes; 0 MB) allocated, 0 (0 bytes; 0 MB) used
	IntCache: cache: 0, tcache: 0, allocated: 0, tallocated: 0
	Launched Version: 1.7.2
	LWJGL: 2.9.0
	OpenGL: GeForce 210/PCIe/SSE2 GL version 3.3.0, NVIDIA Corporation
	Is Modded: Probably not. Jar signature remains and client brand is untouched.
	Type: Client (map_client.txt)
	Resource Packs: []
	Current Language: English (UK)
	Profiler Position: N/A (disabled)
	Vec3 Pool Size: ~~ERROR~~ NullPointerException: null
	Anisotropic Filtering: Off (1)

You can see this full report at http://hopper.minecraft.net/crashes/minecraft/MCX-465195/21337312/

Linked issues

MC-37274 java.lang.ClassCastException: bit cannot be cast to fm Resolved MC-37371 Internal Exeption: java.lang.ClassCastExeption: bit cannot be cast to fm Resolved MC-37692 cant create single player world Resolved MC-37732 multiplayer Resolved MC-38528 Cannot load world Resolved

Comments 7

this bug happened when i try'ed connecting to may fav server 😞
but this doesnt happen to all the 1.7.2 servers i have, plz fix!

I have found that pressing F11 while the game is loading a singleplayer world will trigger this exception and dump the player to the Multiplayer Server list every time. In earlier versions, doing this would often cause the game to go full screen, but only render in a default window-sized area in the corner of the screen. This might be a clue as to why this bug is occurring for some people.

Yeah, it has to do with being full screen. However, I don't want to play the game in a window, I would like to go full screen.

i don't play in fullscreen and it happened to me... I CAN NOT PLAY ON MY OWN SERVER!!!! (FRUSTRATING)

Since quite a while it often happens to me that I get a very similiar message ("biz cannot be cast to fv") when loading a singleplayer world and simultaneusly pressing F11 to go fullscreen. I will then end up at the multiplayer screen, exactly like Carl Lystad said. However the game never chrashed for me and some people here are obviously not able to connect to some servers in any way, nothing to do with going fullscreen. Also the
I do wonder whether this specific bug when pressing F11 while loading a singleplayer world is worth an own bug report with better explanation of the problem than this auto-reportet crash... I found at least one other report that reported this problem, however it was marked as a duplicate to this. But I wonder wether a more detailed report than this wouldn't be more helpful for the developers.
I am not very familiar with bug reports and how everything is handled and stuff, so can someone tell me whether it would be a good idea to re-report this error or not?

Fixed (for me) in 1.8 apparently...

Why am I getting these crash reports?

Sent via the Samsung Galaxy S® 5 ACTIVE™, an AT&T 4G LTE smartphone

-------- Original message --------
From: "Sebastian Schindler (JIRA)" <[email protected]>
Date:09/03/2014 9:33 AM (GMT-06:00)
To: [email protected]
Cc:
Subject: [JIRA] (MC-37203) Hopper: java.lang.ClassCastException: bit cannot
be cast to fm

Sebastian Schindler edited a comment on an issue

Re: Hopper: java.lang.ClassCastException: bit cannot be cast to fm

  • Fixed (for me) in 1.8 apparently... -
    Not fixed. The apparently unconvertible classes are now called "bll" and "fv".
    Add Comment


Minecraft / MC-37203
Hopper: java.lang.ClassCastException: bit cannot be cast to fm
This is an automatically generated report based from the following crash: http://hopper.minecraft.net/crashes/minecraft/MCX-465195/

Crash:

java.lang.ClassCastException: bit cannot be cast to fm

at gu.a(SourceFile:13)
at ef.a(SourceFile:164)
at azd.o(SourceFile:1566)
at azd.ad(SourceFile:753)
at azd.e(SourceFile:704)
at net.minecraft.client.m...
This message was sent by Atlassian JIRA (v6.1.6#6162-sha1:7af547c)

[Bot] Hopper

(Unassigned)

Community Consensus

Minecraft 1.7.2, Minecraft 1.7.3, Minecraft 1.7.4, Minecraft 1.7.10

Minecraft 1.8

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