Minecraft Forums

HELP! minecraft has quit working on me here. When trying to load up, I get an error screen and it is driving me crazy.

Bootstrap (v5)
Current time is Nov 4, 2013 8:42:33 PM
System.getProperty('os.name') == 'Windows 7'
System.getProperty('os.version') == '6.1'
System.getProperty('os.arch') == 'x86'
System.getProperty('java.version') == '1.7.0_45'
System.getProperty('java.vendor') == 'Oracle Corporation'
System.getProperty('sun.arch.data.model') == '32'

Looking for update
Downloading: https://s3.amazonaws.com/Minecraft.Download/Launcher/Launcher.pack.lzma
Got replay in: 431ms
No update found.
Reversing LZMA on C:\Users\Zachary\AppData\Roaming\.minecraft\launcher.pack.lzma to C:\
Users\Zachary\AppData\Roaming\.minecraft\launcher.pack
Unpacking C:\Users\Zachary\AppData\Roaming\.minecraft\launcher.pack to C:\Users\Zachary
\AppData\Roaming\.minecraft\launcher.jar
FATAL ERROR: net.minecraft.bootstrap.fatalBootstrapError: Unable to un-pack200: java.io
.FileNotFoundExceptio: C:\Users\Zachary\AppData\Roaming\ .minecraft\launcher.jar (Access
in denied)
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)

Make sure your Java is up to date. I would also try re-downloading Minecraft from minecraft.net!