What I expected to happen was...:
Game was loading fine and then after changing from full screen, it didn't work. It no longer started.

What actually happened was...:
When loading as before, the Mojang screen appears and then goes black, plays some music and shuts off.

Steps to Reproduce:
1. Open Launcher
2. Press Play

Error as follows:
[16:42:31 INFO]: Refreshing local version list...
[16:42:31 INFO]: Minecraft Launcher 1.3.7 (through bootstrap 5) started on windows...
[16:42:31 INFO]: Current time is Dec 26, 2013 4:42:31 PM
[16:42:31 INFO]: System.getProperty('os.name') == 'Windows Vista'
[16:42:31 INFO]: System.getProperty('os.version') == '6.0'
[16:42:31 INFO]: System.getProperty('os.arch') == 'x86'
[16:42:31 INFO]: System.getProperty('java.version') == '1.7.0_45'
[16:42:31 INFO]: System.getProperty('java.vendor') == 'Oracle Corporation'
[16:42:31 INFO]: System.getProperty('sun.arch.data.model') == '32'
[16:42:31 INFO]: Refreshing remote version list...
[16:42:32 INFO]: Refresh complete.
[16:42:32 INFO]: Loaded 1 profile(s); selected 'jk1108'
[16:42:32 INFO]: Refreshing auth...
[16:42:32 INFO]: Logging in with access token
[16:42:51 INFO]: Getting syncinfo for selected version
[16:42:51 INFO]: Queueing library & version downloads
[16:42:52 INFO]: Download job 'Version & Libraries' started (16 threads, 27 files)
[16:42:52 INFO]: Attempting to download C:\Users\KKleinman Work\AppData\Roaming\.minecraft\libraries\commons-io\commons-io\2.4\commons-io-2.4.jar for job 'Version & Libraries'... (try 0)
[16:42:52 INFO]: Attempting to download C:\Users\KKleinman Work\AppData\Roaming\.minecraft\libraries\tv\twitch\twitch-external-platform\4.5\twitch-external-platform-4.5-natives-windows-32.jar for job 'Version & Libraries'... (try 0)
[16:42:52 INFO]: Attempting to download C:\Users\KKleinman Work\AppData\Roaming\.minecraft\libraries\com\google\code\gson\gson\2.2.4\gson-2.2.4.jar for job 'Version & Libraries'... (try 0)
[16:42:52 INFO]: Attempting to download C:\Users\KKleinman Work\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)
[16:42:52 INFO]: Attempting to download C:\Users\KKleinman Work\AppData\Roaming\.minecraft\libraries\org\apache\commons\commons-lang3\3.1\commons-lang3-3.1.jar for job 'Version & Libraries'... (try 0)
[16:42:52 INFO]: Attempting to download C:\Users\KKleinman Work\AppData\Roaming\.minecraft\libraries\com\google\guava\guava\15.0\guava-15.0.jar for job 'Version & Libraries'... (try 0)
[16:42:52 INFO]: Attempting to download C:\Users\KKleinman Work\AppData\Roaming\.minecraft\libraries\java3d\vecmath\1.3.1\vecmath-1.3.1.jar for job 'Version & Libraries'... (try 0)
[16:42:52 INFO]: Attempting to download C:\Users\KKleinman Work\AppData\Roaming\.minecraft\libraries\net\sf\trove4j\trove4j\3.0.3\trove4j-3.0.3.jar for job 'Version & Libraries'... (try 0)
[16:42:52 INFO]: Attempting to download C:\Users\KKleinman Work\AppData\Roaming\.minecraft\libraries\com\paulscode\soundsystem\20120107\soundsystem-20120107.jar for job 'Version & Libraries'... (try 0)
[16:42:52 INFO]: Attempting to download C:\Users\KKleinman Work\AppData\Roaming\.minecraft\libraries\tv\twitch\twitch-platform\5.12\twitch-platform-5.12-natives-windows-32.jar for job 'Version & Libraries'... (try 0)
[16:42:52 INFO]: Attempting to download C:\Users\KKleinman Work\AppData\Roaming\.minecraft\libraries\net\sf\jopt-simple\jopt-simple\4.5\jopt-simple-4.5.jar for job 'Version & Libraries'... (try 0)
[16:42:52 INFO]: Attempting to download C:\Users\KKleinman Work\AppData\Roaming\.minecraft\libraries\tv\twitch\twitch\5.12\twitch-5.12.jar for job 'Version & Libraries'... (try 0)
[16:42:52 INFO]: Attempting to download C:\Users\KKleinman Work\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)
[16:42:52 INFO]: Attempting to download C:\Users\KKleinman Work\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)
[16:42:52 INFO]: Attempting to download C:\Users\KKleinman Work\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)
[16:42:52 INFO]: Attempting to download C:\Users\KKleinman Work\AppData\Roaming\.minecraft\libraries\com\paulscode\librarylwjglopenal\20100824\librarylwjglopenal-20100824.jar for job 'Version & Libraries'... (try 0)
[16:42:55 INFO]: Download job 'Resources' skipped as there are no files to download
[16:42:55 INFO]: Job 'Resources' finished successfully (took 0:00:00.000)
[16:42:55 INFO]: Finished downloading C:\Users\KKleinman Work\AppData\Roaming\.minecraft\libraries\tv\twitch\twitch-external-platform\4.5\twitch-external-platform-4.5-natives-windows-32.jar for job 'Version & Libraries': Local file matches local checksum, using that
[16:42:55 INFO]: Attempting to download C:\Users\KKleinman Work\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)
[16:42:55 INFO]: Finished downloading C:\Users\KKleinman Work\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
[16:42:55 INFO]: Attempting to download C:\Users\KKleinman Work\AppData\Roaming\.minecraft\libraries\net\java\jutils\jutils\1.0.0\jutils-1.0.0.jar for job 'Version & Libraries'... (try 0)
[16:42:55 INFO]: Finished downloading C:\Users\KKleinman Work\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
[16:42:55 INFO]: Attempting to download C:\Users\KKleinman Work\AppData\Roaming\.minecraft\libraries\com\ibm\icu\icu4j-core-mojang\51.2\icu4j-core-mojang-51.2.jar for job 'Version & Libraries'... (try 0)
[16:42:55 INFO]: Finished downloading C:\Users\KKleinman Work\AppData\Roaming\.minecraft\libraries\org\lwjgl\lwjgl\lwjgl\2.9.1-nightly-20131120\lwjgl-2.9.1-nightly-20131120.jar for job 'Version & Libraries': Local file matches local checksum, using that
[16:42:55 INFO]: Attempting to download C:\Users\KKleinman Work\AppData\Roaming\.minecraft\libraries\net\java\jinput\jinput\2.0.5\jinput-2.0.5.jar for job 'Version & Libraries'... (try 0)
[16:42:55 INFO]: Finished downloading C:\Users\KKleinman Work\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
[16:42:55 INFO]: Attempting to download C:\Users\KKleinman Work\AppData\Roaming\.minecraft\libraries\com\mojang\authlib\1.2\authlib-1.2.jar for job 'Version & Libraries'... (try 0)
[16:42:55 INFO]: Finished downloading C:\Users\KKleinman Work\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
[16:42:55 INFO]: Attempting to download C:\Users\KKleinman Work\AppData\Roaming\.minecraft\libraries\com\paulscode\codecwav\20101023\codecwav-20101023.jar for job 'Version & Libraries'... (try 0)
[16:42:55 INFO]: Finished downloading C:\Users\KKleinman Work\AppData\Roaming\.minecraft\libraries\tv\twitch\twitch-platform\5.12\twitch-platform-5.12-natives-windows-32.jar for job 'Version & Libraries': Local file matches local checksum, using that
[16:42:55 INFO]: Attempting to download C:\Users\KKleinman Work\AppData\Roaming\.minecraft\libraries\com\paulscode\codecjorbis\20101023\codecjorbis-20101023.jar for job 'Version & Libraries'... (try 0)
[16:42:55 INFO]: Finished downloading C:\Users\KKleinman Work\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': Local file matches local checksum, using that
[16:42:55 INFO]: Attempting to download C:\Users\KKleinman Work\AppData\Roaming\.minecraft\libraries\com\paulscode\libraryjavasound\20101123\libraryjavasound-20101123.jar for job 'Version & Libraries'... (try 0)
[16:42:55 INFO]: Finished downloading C:\Users\KKleinman Work\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
[16:42:55 INFO]: Attempting to download C:\Users\KKleinman Work\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)
[16:42:55 INFO]: Finished downloading C:\Users\KKleinman Work\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
[16:42:55 INFO]: Attempting to download C:\Users\KKleinman Work\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)
[16:42:55 INFO]: Finished downloading C:\Users\KKleinman Work\AppData\Roaming\.minecraft\libraries\com\paulscode\soundsystem\20120107\soundsystem-20120107.jar for job 'Version & Libraries': Local file matches local checksum, using that
[16:42:55 INFO]: Attempting to download C:\Users\KKleinman Work\AppData\Roaming\.minecraft\versions\1.7.4\1.7.4.jar for job 'Version & Libraries'... (try 0)
[16:42:55 INFO]: Finished downloading C:\Users\KKleinman Work\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': Local file matches local checksum, using that
[16:42:55 INFO]: Finished downloading C:\Users\KKleinman Work\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
[16:42:55 INFO]: Finished downloading C:\Users\KKleinman Work\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
[16:42:55 INFO]: Finished downloading C:\Users\KKleinman Work\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
[16:42:55 INFO]: Finished downloading C:\Users\KKleinman Work\AppData\Roaming\.minecraft\libraries\com\paulscode\librarylwjglopenal\20100824\librarylwjglopenal-20100824.jar for job 'Version & Libraries': Local file matches local checksum, using that
[16:42:55 INFO]: Finished downloading C:\Users\KKleinman Work\AppData\Roaming\.minecraft\libraries\tv\twitch\twitch\5.12\twitch-5.12.jar for job 'Version & Libraries': Local file matches local checksum, using that
[16:42:55 INFO]: Finished downloading C:\Users\KKleinman Work\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
[16:42:55 INFO]: Finished downloading C:\Users\KKleinman Work\AppData\Roaming\.minecraft\libraries\com\mojang\authlib\1.2\authlib-1.2.jar for job 'Version & Libraries': Local file matches local checksum, using that
[16:42:55 INFO]: Finished downloading C:\Users\KKleinman Work\AppData\Roaming\.minecraft\libraries\com\paulscode\libraryjavasound\20101123\libraryjavasound-20101123.jar for job 'Version & Libraries': Local file matches local checksum, using that
[16:42:55 INFO]: Finished downloading C:\Users\KKleinman Work\AppData\Roaming\.minecraft\libraries\com\paulscode\codecwav\20101023\codecwav-20101023.jar for job 'Version & Libraries': Local file matches local checksum, using that
[16:42:55 INFO]: Finished downloading C:\Users\KKleinman Work\AppData\Roaming\.minecraft\libraries\com\paulscode\codecjorbis\20101023\codecjorbis-20101023.jar for job 'Version & Libraries': Local file matches local checksum, using that
[16:42:55 INFO]: Finished downloading C:\Users\KKleinman Work\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
[16:42:55 INFO]: Finished downloading C:\Users\KKleinman Work\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
[16:42:56 INFO]: Finished downloading C:\Users\KKleinman Work\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
[16:42:56 INFO]: Finished downloading C:\Users\KKleinman Work\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
[16:42:56 INFO]: Finished downloading C:\Users\KKleinman Work\AppData\Roaming\.minecraft\versions\1.7.4\1.7.4.jar for job 'Version & Libraries': Used own copy as it matched etag
[16:42:56 INFO]: Job 'Version & Libraries' finished successfully (took 0:00:04.070)
[16:42:56 INFO]: Launching game
[16:42:56 INFO]: Looking for old natives & assets to clean up...
[16:42:56 INFO]: Unpacking natives to C:\Users\KKleinman Work\AppData\Roaming\.minecraft\versions\1.7.4\1.7.4-natives-79906766577665
[16:42:57 INFO]: Launching in C:\Users\KKleinman Work\AppData\Roaming\.minecraft
[16:42:57 INFO]: Half command: C:\Program Files\Java\jre7\bin\javaw.exe -XX:HeapDumpPath=MojangTricksIntelDriversForPerformance_javaw.exe_minecraft.exe.heapdump -Xmx512M -Djava.library.path=C:\Users\KKleinman Work\AppData\Roaming\.minecraft\versions\1.7.4\1.7.4-natives-79906766577665 -cp C:\Users\KKleinman Work\AppData\Roaming\.minecraft\libraries\java3d\vecmath\1.3.1\vecmath-1.3.1.jar;C:\Users\KKleinman Work\AppData\Roaming\.minecraft\libraries\net\sf\trove4j\trove4j\3.0.3\trove4j-3.0.3.jar;C:\Users\KKleinman Work\AppData\Roaming\.minecraft\libraries\com\ibm\icu\icu4j-core-mojang\51.2\icu4j-core-mojang-51.2.jar;C:\Users\KKleinman Work\AppData\Roaming\.minecraft\libraries\net\sf\jopt-simple\jopt-simple\4.5\jopt-simple-4.5.jar;C:\Users\KKleinman Work\AppData\Roaming\.minecraft\libraries\com\paulscode\codecjorbis\20101023\codecjorbis-20101023.jar;C:\Users\KKleinman Work\AppData\Roaming\.minecraft\libraries\com\paulscode\codecwav\20101023\codecwav-20101023.jar;C:\Users\KKleinman Work\AppData\Roaming\.minecraft\libraries\com\paulscode\libraryjavasound\20101123\libraryjavasound-20101123.jar;C:\Users\KKleinman Work\AppData\Roaming\.minecraft\libraries\com\paulscode\librarylwjglopenal\20100824\librarylwjglopenal-20100824.jar;C:\Users\KKleinman Work\AppData\Roaming\.minecraft\libraries\com\paulscode\soundsystem\20120107\soundsystem-20120107.jar;C:\Users\KKleinman Work\AppData\Roaming\.minecraft\libraries\io\netty\netty-all\4.0.10.Final\netty-all-4.0.10.Final.jar;C:\Users\KKleinman Work\AppData\Roaming\.minecraft\libraries\com\google\guava\guava\15.0\guava-15.0.jar;C:\Users\KKleinman Work\AppData\Roaming\.minecraft\libraries\org\apache\commons\commons-lang3\3.1\commons-lang3-3.1.jar;C:\Users\KKleinman Work\AppData\Roaming\.minecraft\libraries\commons-io\commons-io\2.4\commons-io-2.4.jar;C:\Users\KKleinman Work\AppData\Roaming\.minecraft\libraries\net\java\jinput\jinput\2.0.5\jinput-2.0.5.jar;C:\Users\KKleinman Work\AppData\Roaming\.minecraft\libraries\net\java\jutils\jutils\1.0.0\jutils-1.0.0.jar;C:\Users\KKleinman Work\AppData\Roaming\.minecraft\libraries\com\google\code\gson\gson\2.2.4\gson-2.2.4.jar;C:\Users\KKleinman Work\AppData\Roaming\.minecraft\libraries\com\mojang\authlib\1.2\authlib-1.2.jar;C:\Users\KKleinman Work\AppData\Roaming\.minecraft\libraries\org\apache\logging\log4j\log4j-api\2.0-beta9\log4j-api-2.0-beta9.jar;C:\Users\KKleinman Work\AppData\Roaming\.minecraft\libraries\org\apache\logging\log4j\log4j-core\2.0-beta9\log4j-core-2.0-beta9.jar;C:\Users\KKleinman Work\AppData\Roaming\.minecraft\libraries\org\lwjgl\lwjgl\lwjgl\2.9.1-nightly-20131120\lwjgl-2.9.1-nightly-20131120.jar;C:\Users\KKleinman Work\AppData\Roaming\.minecraft\libraries\org\lwjgl\lwjgl\lwjgl_util\2.9.1-nightly-20131120\lwjgl_util-2.9.1-nightly-20131120.jar;C:\Users\KKleinman Work\AppData\Roaming\.minecraft\libraries\tv\twitch\twitch\5.12\twitch-5.12.jar;C:\Users\KKleinman Work\AppData\Roaming\.minecraft\versions\1.7.4\1.7.4.jar net.minecraft.client.main.Main
[16:43:00 INFO]: Client> [16:43:00] [main/INFO]: Setting user: jk1108
[16:43:00 INFO]: Client> [16:43:00] [main/INFO]: (Session ID is token:e9616b54a6964d60b5994dd2c3492df8:81287000960b425184df252fb1102061)
[16:43:00 INFO]: Client> [16:43:00] [Client thread/INFO]: LWJGL Version: 2.9.1
[16:43:02 INFO]: Client> [16:43:02] [Client thread/INFO]: Reloading ResourceManager: Default
[16:43:02 INFO]: Client>
[16:43:02 INFO]: Client> Starting up SoundSystem...
[16:43:03 INFO]: Client> Initializing LWJGL OpenAL
[16:43:03 INFO]: Client> (The LWJGL binding of OpenAL. For more information, see http://www.lwjgl.org)
[16:43:03 INFO]: Client> OpenAL initialized.
[16:43:03 INFO]: Client>
[16:43:03 INFO]: Client> [16:43:03] [Sound Library Loader/INFO]: Sound engine started
[16:43:04 INFO]: Client> [16:43:04] [Client thread/INFO]: Created: 512x256 textures/blocks-atlas
[16:43:05 INFO]: Client> [16:43:05] [Client thread/INFO]: Created: 256x256 textures/items-atlas
[16:43:18 INFO]: Client> #
[16:43:18 INFO]: Client> # A fatal error has been detected by the Java Runtime Environment:
[16:43:18 INFO]: Client> #
[16:43:18 INFO]: Client> # EXCEPTION_ACCESS_VIOLATION (0xc0000005) at pc=0x06224fb9, pid=5672, tid=5000
[16:43:18 INFO]: Client> #
[16:43:18 INFO]: Client> # JRE version: Java(TM) SE Runtime Environment (7.0_45-b18) (build 1.7.0_45-b18)
[16:43:18 INFO]: Client> # Java VM: Java HotSpot(TM) Client VM (24.45-b08 mixed mode, sharing windows-x86 )
[16:43:18 INFO]: Client> # Problematic frame:
[16:43:19 INFO]: Client> # C [ig4icd32.dll+0x104fb9]
[16:43:19 INFO]: Client> #
[16:43:19 INFO]: Client> # Failed to write core dump. Minidumps are not enabled by default on client versions of Windows
[16:43:19 INFO]: Client> #
[16:43:19 INFO]: Client> # An error report file with more information is saved as:
[16:43:19 INFO]: Client> # C:\Users\KKleinman Work\AppData\Roaming\.minecraft\hs_err_pid5672.log
[16:43:20 INFO]: Client> #
[16:43:20 INFO]: Client> # If you would like to submit a bug report, please visit:
[16:43:20 INFO]: Client> # http://bugreport.sun.com/bugreport/crash.jsp
[16:43:20 INFO]: Client> # The crash happened outside the Java Virtual Machine in native code.
[16:43:20 INFO]: Client> # See problematic frame for where to report the bug.
[16:43:20 INFO]: Client> #
[16:43:20 INFO]: Client> AL lib: (EE) alc_cleanup: 1 device not closed
[16:43:21 ERROR]: Game ended with bad state (exit code 1)
[16:43:21 INFO]: Ignoring visibility rule and showing launcher due to a game crash
[16:43:21 INFO]: Deleting C:\Users\KKleinman Work\AppData\Roaming\.minecraft\versions\1.7.4\1.7.4-natives-79906766577665
[16:43:21 WARN]: Couldn't delete C:\Users\KKleinman Work\AppData\Roaming\.minecraft\versions\1.7.4\1.7.4-natives-79906766577665 - scheduling for deletion upon exit