Minecraft Forums

I was experiencing the exact same symptoms. Turns out that after you repair permissions, Java throws a fit. My diagnosis, at least.

This may not be the same problem as others are having, but this fixed my problem.

I simply had to reinstall Java. If you're running Mac OS then you don't even have to uninstall it first.

Minecraft is programed to use Java 6 when running on Mac OS.

You can get the (currently latest version of) Java 6 for Mac here:
http://support.apple.com/kb/DL1572

or here if you're still on Snow Leopard:
http://support.apple.com/kb/DL1573

I personally use the JDK, which you can get from Apple's dev site. I actually haven't tried fixing the problem with a JRE. But I see no reason why it wouldn't work.

You Windows people usually have to get it via Oracle's site anyway, so you needn't any instruction. And you'll probably be getting Java 7 anyway.

Minecraft WILL run perfectly fine on Java 7 for Mac, it just needs a little tender loving care. Namely, a manually updated LWJGL.

Sorry for the slight bump, but consider this a solution that may prevent some further posts.

# Copyright (c) 1993-2009 Microsoft Corp.
#
# This is a sample HOSTS file used by Microsoft TCP/IP for Windows.
#
# This file contains the mappings of IP addresses to host names. Each
# entry should be kept on an individual line. The IP address should
# be placed in the first column followed by the corresponding host name.
# The IP address and the host name should be separated by at least one
# space.
#
# Additionally, comments (such as these) may be inserted on individual
# lines or following the machine name denoted by a '#' symbol.
#
# For example:
#
# 102.54.94.97 rhino.acme.com # source server
# 38.25.63.10 x.acme.com # x client host

# localhost name resolution is handled within DNS itself.
# 127.0.0.1 localhost
# ::1 localhost

# Copyright (c) 1993-2009 Microsoft Corp.
#
# This is a sample HOSTS file used by Microsoft TCP/IP for Windows.
#
# This file contains the mappings of IP addresses to host names. Each
# entry should be kept on an individual line. The IP address should
# be placed in the first column followed by the corresponding host name.
# The IP address and the host name should be separated by at least one
# space.
#
# Additionally, comments (such as these) may be inserted on individual
# lines or following the machine name denoted by a '#' symbol.
#
# For example:
#
# 102.54.94.97 rhino.acme.com # source server
# 38.25.63.10 x.acme.com # x client host

# localhost name resolution is handled within DNS itself.
# 127.0.0.1 localhost
# ::1 localhost

Bootstrap (v5)
Current time is Mar 21, 2014 7:44:06 PM
System.getProperty('os.name') == 'Mac OS X'
System.getProperty('os.version') == '10.8.5'
System.getProperty('os.arch') == 'x86_64'
System.getProperty('java.version') == '1.6.0_65'
System.getProperty('java.vendor') == 'Apple Inc.'
System.getProperty('sun.arch.data.model') == '64'

Looking for update
Downloading: https://s3.amazonaws...ncher.pack.lzma
Got reply in: 444ms
No update found.
Reversing LZMA on /Users/stevenfritchen/Library/Application Support/minecraft/launcher.pack.lzma to /Users/stevenfritchen/Library/Application Support/minecraft/launcher.pack
Unpacking /Users/stevenfritchen/Library/Application Support/minecraft/launcher.pack to /Users/stevenfritchen/Library/Application Support/minecraft/launcher.jar
FATAL ERROR: net.minecraft.bootstrap.FatalBootstrapError: Unable to un-pack200: java.io.FileNotFoundException: /Users/stevenfritchen/Library/Application Support/minecraft/launcher.jar (No such file or directory)
at net.minecraft.bootstrap.Bootstrap.unpack(Bootstrap.java:159)
at net.minecraft.bootstrap.Bootstrap.execute(Bootstrap.java:123)
at net.minecraft.bootstrap.Bootstrap.main(Bootstrap.java:381)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
at java.lang.reflect.Method.invoke(Method.java:597)
at apple.launcher.LaunchRunner.run(LaunchRunner.java:116)
at apple.launcher.LaunchRunner.callMain(LaunchRunner.java:51)
at apple.launcher.JavaApplicationLauncher.launch(JavaApplicationLauncher.java:52)


Please fix the error and restart.





I am on a mac and i accidently deleted my launcher.zip anyway i can fix this plz help so i may play minecraft again

Quote from cestislife

I assume you are on Windows, you may have a problem with your hosts file, which overrides DNS queries. Please follow the following directions:

Hold down the Windows key, and press R. In the window that appears, type in %SystemRoot%\System32\drivers\etc, and press Enter. In the window that appears you will see a file, "hosts". Open that file in Notepad, and copy the contents here.

# Copyright (c) 1993-2009 Microsoft Corp.
#
# This is a sample HOSTS file used by Microsoft TCP/IP for Windows.
#
# This file contains the mappings of IP addresses to host names. Each
# entry should be kept on an individual line. The IP address should
# be placed in the first column followed by the corresponding host name.
# The IP address and the host name should be separated by at least one
# space.
#
# Additionally, comments (such as these) may be inserted on individual
# lines or following the machine name denoted by a '#' symbol.
#
# For example:
#
# 102.54.94.97 rhino.acme.com # source server
# 38.25.63.10 x.acme.com # x client host

# localhost name resolution is handled within DNS itself.
# 127.0.0.1 localhost
# ::1 localhost

# Copyright (c) 1993-2009 Microsoft Corp.
#
# This is a sample HOSTS file used by Microsoft TCP/IP for Windows.
#
# This file contains the mappings of IP addresses to host names. Each
# entry should be kept on an individual line. The IP address should
# be placed in the first column followed by the corresponding host name.
# The IP address and the host name should be separated by at least one
# space.
#
# Additionally, comments (such as these) may be inserted on individual
# lines or following the machine name denoted by a '#' symbol.
#
# For example:
#
# 102.54.94.97 rhino.acme.com # source server
# 38.25.63.10 x.acme.com # x client host

# localhost name resolution is handled within DNS itself.
# 127.0.0.1 localhost
# ::1 localhost

# Copyright (c) 1993-2009 Microsoft Corp.
#
# This is a sample HOSTS file used by Microsoft TCP/IP for Windows.
#
# This file contains the mappings of IP addresses to host names. Each
# entry should be kept on an individual line. The IP address should
# be placed in the first column followed by the corresponding host name.
# The IP address and the host name should be separated by at least one
# space.
#
# Additionally, comments (such as these) may be inserted on individual
# lines or following the machine name denoted by a '#' symbol.
#
# For example:
#
# 102.54.94.97 rhino.acme.com # source server
# 38.25.63.10 x.acme.com # x client host

# localhost name resolution is handled within DNS itself.
# 127.0.0.1 localhost
# ::1 localhost