This is my first time. I try to connect to minecraft 1.7.4 to broadcast twitch.
Whenever I try to connect to minecraft 1.7.4 this is what i get:

[18:54:43 INFO]: Minecraft Launcher 1.3.7 (through bootstrap 5) started on windows...

[18:54:43 INFO]: Current time is Dec 14, 2013 6:54:43 PM

[18:54:43 INFO]: System.getProperty('os.name') == 'Windows 7'

[18:54:43 INFO]: System.getProperty('os.version') == '6.1'

[18:54:43 INFO]: System.getProperty('os.arch') == 'amd64'

[18:54:43 INFO]: System.getProperty('java.version') == '1.7.0_07'

[18:54:43 INFO]: System.getProperty('java.vendor') == 'Oracle Corporation'

[18:54:43 INFO]: System.getProperty('sun.arch.data.model') == '64'

[18:54:43 INFO]: Refreshing local version list...

[18:54:44 INFO]: Refreshing remote version list...

[18:54:44 INFO]: Refresh complete.

[18:54:44 INFO]: Loaded 16 profile(s); selected 'OptiFine'

[18:54:44 INFO]: Refreshing auth...

[18:54:44 INFO]: Logging in with access token

[18:54:51 INFO]: Getting syncinfo for selected version

[18:54:51 INFO]: Queueing library & version downloads

[18:54:52 INFO]: Download job 'Version & Libraries' started (16 threads, 27 files)

[18:54:52 INFO]: Attempting to download C:\Users\Gateway\AppData\Roaming\.minecraft\libraries\com\paulscode\codecjorbis\20101023\codecjorbis-20101023.jar for job 'Version & Libraries'... (try 0)

[18:54:52 INFO]: Attempting to download C:\Users\Gateway\AppData\Roaming\.minecraft\libraries\org\lwjgl\lwjgl\lwjgl-platform\2.9.1-nightly-20131120\lwjgl-platform-2.9.1-nightly-20131120-natives-windows.jar for job 'Version & Libraries'... (try 0)

[18:54:52 INFO]: Attempting to download C:\Users\Gateway\AppData\Roaming\.minecraft\libraries\io\netty\netty-all\4.0.10.Final\netty-all-4.0.10.Final.jar for job 'Version & Libraries'... (try 0)

[18:54:52 INFO]: Attempting to download C:\Users\Gateway\AppData\Roaming\.minecraft\libraries\org\lwjgl\lwjgl\lwjgl\2.9.1-nightly-20131120\lwjgl-2.9.1-nightly-20131120.jar for job 'Version & Libraries'... (try 0)

[18:54:52 INFO]: Attempting to download C:\Users\Gateway\AppData\Roaming\.minecraft\libraries\tv\twitch\twitch-external-platform\4.5\twitch-external-platform-4.5-natives-windows-64.jar for job 'Version & Libraries'... (try 0)

[18:54:52 INFO]: Attempting to download C:\Users\Gateway\AppData\Roaming\.minecraft\libraries\org\apache\logging\log4j\log4j-api\2.0-beta9\log4j-api-2.0-beta9.jar for job 'Version & Libraries'... (try 0)

[18:54:52 INFO]: Attempting to download C:\Users\Gateway\AppData\Roaming\.minecraft\libraries\org\apache\logging\log4j\log4j-core\2.0-beta9\log4j-core-2.0-beta9.jar for job 'Version & Libraries'... (try 0)

[18:54:52 INFO]: Attempting to download C:\Users\Gateway\AppData\Roaming\.minecraft\libraries\tv\twitch\twitch-platform\5.12\twitch-platform-5.12-natives-windows-64.jar for job 'Version & Libraries'... (try 0)

[18:54:52 INFO]: Attempting to download C:\Users\Gateway\AppData\Roaming\.minecraft\libraries\com\paulscode\librarylwjglopenal\20100824\librarylwjglopenal-20100824.jar for job 'Version & Libraries'... (try 0)

[18:54:52 INFO]: Attempting to download C:\Users\Gateway\AppData\Roaming\.minecraft\libraries\org\lwjgl\lwjgl\lwjgl_util\2.9.1-nightly-20131120\lwjgl_util-2.9.1-nightly-20131120.jar for job 'Version & Libraries'... (try 0)

[18:54:52 INFO]: Attempting to download C:\Users\Gateway\AppData\Roaming\.minecraft\libraries\com\google\code\gson\gson\2.2.4\gson-2.2.4.jar for job 'Version & Libraries'... (try 0)

[18:54:52 INFO]: Attempting to download C:\Users\Gateway\AppData\Roaming\.minecraft\libraries\com\paulscode\codecwav\20101023\codecwav-20101023.jar for job 'Version & Libraries'... (try 0)

[18:54:52 INFO]: Attempting to download C:\Users\Gateway\AppData\Roaming\.minecraft\libraries\org\apache\commons\commons-lang3\3.1\commons-lang3-3.1.jar for job 'Version & Libraries'... (try 0)

[18:54:52 INFO]: Attempting to download C:\Users\Gateway\AppData\Roaming\.minecraft\libraries\com\ibm\icu\icu4j-core-mojang\51.2\icu4j-core-mojang-51.2.jar for job 'Version & Libraries'... (try 0)

[18:54:52 INFO]: Attempting to download C:\Users\Gateway\AppData\Roaming\.minecraft\libraries\com\paulscode\soundsystem\20120107\soundsystem-20120107.jar for job 'Version & Libraries'... (try 0)

[18:54:52 INFO]: Attempting to download C:\Users\Gateway\AppData\Roaming\.minecraft\libraries\commons-io\commons-io\2.4\commons-io-2.4.jar for job 'Version & Libraries'... (try 0)

[18:54:52 INFO]: Download job 'Resources' skipped as there are no files to download

[18:54:52 INFO]: Job 'Resources' finished successfully (took 0:00:00.000)

[18:54:52 INFO]: Finished downloading C:\Users\Gateway\AppData\Roaming\.minecraft\libraries\com\ibm\icu\icu4j-core-mojang\51.2\icu4j-core-mojang-51.2.jar for job 'Version & Libraries': Local file matches local checksum, using that

[18:54:52 INFO]: Attempting to download C:\Users\Gateway\AppData\Roaming\.minecraft\libraries\net\sf\jopt-simple\jopt-simple\4.5\jopt-simple-4.5.jar for job 'Version & Libraries'... (try 0)

[18:54:52 INFO]: Finished downloading C:\Users\Gateway\AppData\Roaming\.minecraft\libraries\com\paulscode\librarylwjglopenal\20100824\librarylwjglopenal-20100824.jar for job 'Version & Libraries': Local file matches local checksum, using that

[18:54:52 INFO]: Attempting to download C:\Users\Gateway\AppData\Roaming\.minecraft\libraries\net\java\jinput\jinput\2.0.5\jinput-2.0.5.jar for job 'Version & Libraries'... (try 0)

[18:54:52 INFO]: Finished downloading C:\Users\Gateway\AppData\Roaming\.minecraft\libraries\net\sf\jopt-simple\jopt-simple\4.5\jopt-simple-4.5.jar for job 'Version & Libraries': Local file matches local checksum, using that

[18:54:52 INFO]: Attempting to download C:\Users\Gateway\AppData\Roaming\.minecraft\libraries\tv\twitch\twitch\5.12\twitch-5.12.jar for job 'Version & Libraries'... (try 0)

[18:54:52 INFO]: Finished downloading C:\Users\Gateway\AppData\Roaming\.minecraft\libraries\net\java\jinput\jinput\2.0.5\jinput-2.0.5.jar for job 'Version & Libraries': Local file matches local checksum, using that

[18:54:52 INFO]: Attempting to download C:\Users\Gateway\AppData\Roaming\.minecraft\libraries\com\google\guava\guava\15.0\guava-15.0.jar for job 'Version & Libraries'... (try 0)

[18:54:52 INFO]: Finished downloading C:\Users\Gateway\AppData\Roaming\.minecraft\libraries\tv\twitch\twitch\5.12\twitch-5.12.jar for job 'Version & Libraries': Local file matches local checksum, using that

[18:54:52 INFO]: Attempting to download C:\Users\Gateway\AppData\Roaming\.minecraft\libraries\com\mojang\authlib\1.2\authlib-1.2.jar for job 'Version & Libraries'... (try 0)

[18:54:52 INFO]: Finished downloading C:\Users\Gateway\AppData\Roaming\.minecraft\libraries\com\mojang\authlib\1.2\authlib-1.2.jar for job 'Version & Libraries': Local file matches local checksum, using that

[18:54:52 INFO]: Attempting to download C:\Users\Gateway\AppData\Roaming\.minecraft\libraries\com\paulscode\libraryjavasound\20101123\libraryjavasound-20101123.jar for job 'Version & Libraries'... (try 0)

[18:54:52 INFO]: Finished downloading C:\Users\Gateway\AppData\Roaming\.minecraft\libraries\com\paulscode\libraryjavasound\20101123\libraryjavasound-20101123.jar for job 'Version & Libraries': Local file matches local checksum, using that

[18:54:52 INFO]: Attempting to download C:\Users\Gateway\AppData\Roaming\.minecraft\libraries\java3d\vecmath\1.3.1\vecmath-1.3.1.jar for job 'Version & Libraries'... (try 0)

[18:54:52 INFO]: Finished downloading C:\Users\Gateway\AppData\Roaming\.minecraft\libraries\java3d\vecmath\1.3.1\vecmath-1.3.1.jar for job 'Version & Libraries': Local file matches local checksum, using that

[18:54:52 INFO]: Attempting to download C:\Users\Gateway\AppData\Roaming\.minecraft\libraries\net\java\jutils\jutils\1.0.0\jutils-1.0.0.jar for job 'Version & Libraries'... (try 0)

[18:54:52 INFO]: Finished downloading C:\Users\Gateway\AppData\Roaming\.minecraft\libraries\net\java\jutils\jutils\1.0.0\jutils-1.0.0.jar for job 'Version & Libraries': Local file matches local checksum, using that

[18:54:52 INFO]: Finished downloading C:\Users\Gateway\AppData\Roaming\.minecraft\libraries\org\apache\logging\log4j\log4j-core\2.0-beta9\log4j-core-2.0-beta9.jar for job 'Version & Libraries': Local file matches local checksum, using that

[18:54:52 INFO]: Finished downloading C:\Users\Gateway\AppData\Roaming\.minecraft\libraries\commons-io\commons-io\2.4\commons-io-2.4.jar for job 'Version & Libraries': Local file matches local checksum, using that

[18:54:52 INFO]: Attempting to download C:\Users\Gateway\AppData\Roaming\.minecraft\libraries\net\java\jinput\jinput-platform\2.0.5\jinput-platform-2.0.5-natives-windows.jar for job 'Version & Libraries'... (try 0)

[18:54:52 INFO]: Attempting to download C:\Users\Gateway\AppData\Roaming\.minecraft\libraries\net\sf\trove4j\trove4j\3.0.3\trove4j-3.0.3.jar for job 'Version & Libraries'... (try 0)

[18:54:52 INFO]: Attempting to download C:\Users\Gateway\AppData\Roaming\.minecraft\versions\1.7.4\1.7.4.jar for job 'Version & Libraries'... (try 0)

[18:54:52 INFO]: Finished downloading C:\Users\Gateway\AppData\Roaming\.minecraft\libraries\net\java\jinput\jinput-platform\2.0.5\jinput-platform-2.0.5-natives-windows.jar for job 'Version & Libraries': Local file matches local checksum, using that

[18:54:52 INFO]: Finished downloading C:\Users\Gateway\AppData\Roaming\.minecraft\libraries\io\netty\netty-all\4.0.10.Final\netty-all-4.0.10.Final.jar for job 'Version & Libraries': Local file matches local checksum, using that

[18:54:52 INFO]: Finished downloading C:\Users\Gateway\AppData\Roaming\.minecraft\libraries\com\google\guava\guava\15.0\guava-15.0.jar for job 'Version & Libraries': Local file matches local checksum, using that

[18:54:52 INFO]: Finished downloading C:\Users\Gateway\AppData\Roaming\.minecraft\libraries\net\sf\trove4j\trove4j\3.0.3\trove4j-3.0.3.jar for job 'Version & Libraries': Local file matches local checksum, using that

[18:54:52 INFO]: Finished downloading C:\Users\Gateway\AppData\Roaming\.minecraft\libraries\com\google\code\gson\gson\2.2.4\gson-2.2.4.jar for job 'Version & Libraries': Local file matches local checksum, using that

[18:54:52 INFO]: Finished downloading C:\Users\Gateway\AppData\Roaming\.minecraft\libraries\org\apache\logging\log4j\log4j-api\2.0-beta9\log4j-api-2.0-beta9.jar for job 'Version & Libraries': Local file matches local checksum, using that

[18:54:52 INFO]: Finished downloading C:\Users\Gateway\AppData\Roaming\.minecraft\libraries\org\apache\commons\commons-lang3\3.1\commons-lang3-3.1.jar for job 'Version & Libraries': Local file matches local checksum, using that

[18:54:52 INFO]: Finished downloading C:\Users\Gateway\AppData\Roaming\.minecraft\libraries\com\paulscode\soundsystem\20120107\soundsystem-20120107.jar for job 'Version & Libraries': Local file matches local checksum, using that

[18:54:52 INFO]: Finished downloading C:\Users\Gateway\AppData\Roaming\.minecraft\libraries\com\paulscode\codecwav\20101023\codecwav-20101023.jar for job 'Version & Libraries': Local file matches local checksum, using that

[18:54:52 INFO]: Finished downloading C:\Users\Gateway\AppData\Roaming\.minecraft\libraries\com\paulscode\codecjorbis\20101023\codecjorbis-20101023.jar for job 'Version & Libraries': Local file matches local checksum, using that

[18:54:52 INFO]: Finished downloading C:\Users\Gateway\AppData\Roaming\.minecraft\versions\1.7.4\1.7.4.jar for job 'Version & Libraries': Used own copy as it matched etag

[18:55:35 INFO]: Finished downloading C:\Users\Gateway\AppData\Roaming\.minecraft\libraries\org\lwjgl\lwjgl\lwjgl-platform\2.9.1-nightly-20131120\lwjgl-platform-2.9.1-nightly-20131120-natives-windows.jar for job 'Version & Libraries': Couldn't connect to server (SocketTimeoutException: 'Read timed out') but have local file, assuming it's good

[18:55:39 INFO]: Finished downloading C:\Users\Gateway\AppData\Roaming\.minecraft\libraries\tv\twitch\twitch-platform\5.12\twitch-platform-5.12-natives-windows-64.jar for job 'Version & Libraries': Couldn't connect to server (SocketTimeoutException: 'Read timed out') but have local file, assuming it's good

[18:55:46 INFO]: Finished downloading C:\Users\Gateway\AppData\Roaming\.minecraft\libraries\org\lwjgl\lwjgl\lwjgl\2.9.1-nightly-20131120\lwjgl-2.9.1-nightly-20131120.jar for job 'Version & Libraries': Couldn't connect to server (SocketTimeoutException: 'Read timed out') but have local file, assuming it's good

[18:56:20 INFO]: Finished downloading C:\Users\Gateway\AppData\Roaming\.minecraft\libraries\org\lwjgl\lwjgl\lwjgl_util\2.9.1-nightly-20131120\lwjgl_util-2.9.1-nightly-20131120.jar for job 'Version & Libraries': Couldn't connect to server (SocketTimeoutException: 'Read timed out') but have local file, assuming it's good

[18:56:23 INFO]: Finished downloading C:\Users\Gateway\AppData\Roaming\.minecraft\libraries\tv\twitch\twitch-external-platform\4.5\twitch-external-platform-4.5-natives-windows-64.jar for job 'Version & Libraries': Couldn't connect to server (SocketTimeoutException: 'Read timed out') but have local file, assuming it's good

[18:56:23 INFO]: Job 'Version & Libraries' finished successfully (took 0:01:30.890)

[18:56:23 INFO]: Launching game

[18:56:23 INFO]: Looking for old natives & assets to clean up...

[18:56:23 INFO]: Unpacking natives to C:\Users\Gateway\AppData\Roaming\.minecraft\versions\1.7.4\1.7.4-natives-558593489477686

[18:56:23 ERROR]: Couldn't unpack natives!

java.util.zip.ZipException: error in opening zip file
at java.util.zip.ZipFile.open(Native Method) ~[?:1.7.0_07]
at java.util.zip.ZipFile.<init>(Unknown Source) ~[?:1.7.0_07]
at java.util.zip.ZipFile.<init>(Unknown Source) ~[?:1.7.0_07]
at java.util.zip.ZipFile.<init>(Unknown Source) ~[?:1.7.0_07]
at net.minecraft.launcher.GameLauncher.unpackNatives(GameLauncher.java:469) ~[launcher.jar:?]
at net.minecraft.launcher.GameLauncher.launchGame(GameLauncher.java:213) [launcher.jar:?]
at net.minecraft.launcher.GameLauncher.onDownloadJobFinished(GameLauncher.java:619) [launcher.jar:?]
at net.minecraft.launcher.updater.download.DownloadJob.popAndDownload(DownloadJob.java:120) [launcher.jar:?]
at net.minecraft.launcher.updater.download.DownloadJob.access$000(DownloadJob.java:12) [launcher.jar:?]
at net.minecraft.launcher.updater.download.DownloadJob$1.run(DownloadJob.java:89) [launcher.jar:?]
at java.util.concurrent.Executors$RunnableAdapter.call(Unknown Source) [?:1.7.0_07]
at java.util.concurrent.FutureTask$Sync.innerRun(Unknown Source) [?:1.7.0_07]
at java.util.concurrent.FutureTask.run(Unknown Source) [?:1.7.0_07]
at java.util.concurrent.ThreadPoolExecutor.runWorker(Unknown Source) [?:1.7.0_07]
at java.util.concurrent.ThreadPoolExecutor$Worker.run(Unknown Source) [?:1.7.0_07]
at java.lang.Thread.run(Unknown Source) [?:1.7.0_07]