Put the summary of the bug you're having here

I expected the game to load after clicking play, however the launcher stays at a blank white screen after loading the snapshot and the game does not start, no mods are being used, pure vanilla client.

This is what shows up in the log when attempting to launch:

09:58:23 INFO]: Deleting C:\Users\kenne_000\AppData\Roaming\.minecraft\versions\15w44a\15w44a-natives-135503765120514
[10:01:42 INFO]: Getting syncinfo for selected version
[10:01:42 INFO]: Queueing library & version downloads
[10:01:42 INFO]: Download job 'Version & Libraries' started (16 threads, 31 files)
[10:01:42 INFO]: Attempting to download C:\Users\kenne_000\AppData\Roaming\.minecraft\libraries\oshi-project\oshi-core\1.1\oshi-core-1.1.jar for job 'Version & Libraries'... (try 0)
[10:01:42 INFO]: Attempting to download C:\Users\kenne_000\AppData\Roaming\.minecraft\libraries\net\sf\jopt-simple\jopt-simple\4.6\jopt-simple-4.6.jar for job 'Version & Libraries'... (try 0)
[10:01:42 INFO]: Attempting to download C:\Users\kenne_000\AppData\Roaming\.minecraft\libraries\com\paulscode\soundsystem\20120107\soundsystem-20120107.jar for job 'Version & Libraries'... (try 0)
[10:01:42 INFO]: Attempting to download C:\Users\kenne_000\AppData\Roaming\.minecraft\libraries\net\java\jutils\jutils\1.0.0\jutils-1.0.0.jar for job 'Version & Libraries'... (try 0)
[10:01:42 INFO]: Attempting to download C:\Users\kenne_000\AppData\Roaming\.minecraft\libraries\net\java\dev\jna\platform\3.4.0\platform-3.4.0.jar for job 'Version & Libraries'... (try 0)
[10:01:42 INFO]: Attempting to download C:\Users\kenne_000\AppData\Roaming\.minecraft\libraries\commons-io\commons-io\2.4\commons-io-2.4.jar for job 'Version & Libraries'... (try 0)
[10:01:42 INFO]: Attempting to download C:\Users\kenne_000\AppData\Roaming\.minecraft\libraries\org\lwjgl\lwjgl\lwjgl-platform\2.9.4-nightly-20150209\lwjgl-platform-2.9.4-nightly-20150209-natives-windows.jar for job 'Version & Libraries'... (try 0)
[10:01:42 INFO]: Attempting to download C:\Users\kenne_000\AppData\Roaming\.minecraft\libraries\org\lwjgl\lwjgl\lwjgl\2.9.4-nightly-20150209\lwjgl-2.9.4-nightly-20150209.jar for job 'Version & Libraries'... (try 0)
[10:01:42 INFO]: Attempting to download C:\Users\kenne_000\AppData\Roaming\.minecraft\libraries\io\netty\netty-all\4.0.23.Final\netty-all-4.0.23.Final.jar for job 'Version & Libraries'... (try 0)
[10:01:42 INFO]: Attempting to download C:\Users\kenne_000\AppData\Roaming\.minecraft\libraries\com\google\guava\guava\17.0\guava-17.0.jar for job 'Version & Libraries'... (try 0)
[10:01:42 INFO]: Attempting to download C:\Users\kenne_000\AppData\Roaming\.minecraft\libraries\com\paulscode\libraryjavasound\20101123\libraryjavasound-20101123.jar for job 'Version & Libraries'... (try 0)
[10:01:42 INFO]: Attempting to download C:\Users\kenne_000\AppData\Roaming\.minecraft\libraries\com\paulscode\codecjorbis\20101023\codecjorbis-20101023.jar for job 'Version & Libraries'... (try 0)
[10:01:42 INFO]: Attempting to download C:\Users\kenne_000\AppData\Roaming\.minecraft\libraries\org\apache\httpcomponents\httpcore\4.3.2\httpcore-4.3.2.jar for job 'Version & Libraries'... (try 0)
[10:01:42 INFO]: Attempting to download C:\Users\kenne_000\AppData\Roaming\.minecraft\libraries\com\paulscode\librarylwjglopenal\20100824\librarylwjglopenal-20100824.jar for job 'Version & Libraries'... (try 0)
[10:01:42 INFO]: Attempting to download C:\Users\kenne_000\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)
[10:01:42 INFO]: Attempting to download C:\Users\kenne_000\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)
[10:01:43 INFO]: Download job 'Resources' skipped as there are no files to download
[10:01:43 INFO]: Job 'Resources' finished successfully (took 0:00:00.001)
[10:01:43 INFO]: Finished downloading C:\Users\kenne_000\AppData\Roaming\.minecraft\libraries\com\google\guava\guava\17.0\guava-17.0.jar for job 'Version & Libraries': Local file matches local checksum, using that
[10:01:43 INFO]: Finished downloading C:\Users\kenne_000\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
[10:01:43 INFO]: Attempting to download C:\Users\kenne_000\AppData\Roaming\.minecraft\libraries\org\apache\commons\commons-compress\1.8.1\commons-compress-1.8.1.jar for job 'Version & Libraries'... (try 0)
[10:01:43 INFO]: Attempting to download C:\Users\kenne_000\AppData\Roaming\.minecraft\libraries\commons-logging\commons-logging\1.1.3\commons-logging-1.1.3.jar for job 'Version & Libraries'... (try 0)
[10:01:43 INFO]: Finished downloading C:\Users\kenne_000\AppData\Roaming\.minecraft\libraries\io\netty\netty-all\4.0.23.Final\netty-all-4.0.23.Final.jar for job 'Version & Libraries': Local file matches local checksum, using that
[10:01:43 INFO]: Attempting to download C:\Users\kenne_000\AppData\Roaming\.minecraft\libraries\com\mojang\realms\1.7.24\realms-1.7.24.jar for job 'Version & Libraries'... (try 0)
[10:01:43 INFO]: Finished downloading C:\Users\kenne_000\AppData\Roaming\.minecraft\libraries\commons-logging\commons-logging\1.1.3\commons-logging-1.1.3.jar for job 'Version & Libraries': Local file matches local checksum, using that
[10:01:43 INFO]: Attempting to download C:\Users\kenne_000\AppData\Roaming\.minecraft\libraries\net\java\dev\jna\jna\3.4.0\jna-3.4.0.jar for job 'Version & Libraries'... (try 0)
[10:01:43 INFO]: Finished downloading C:\Users\kenne_000\AppData\Roaming\.minecraft\libraries\com\mojang\realms\1.7.24\realms-1.7.24.jar for job 'Version & Libraries': Local file matches local checksum, using that
[10:01:43 INFO]: Attempting to download C:\Users\kenne_000\AppData\Roaming\.minecraft\libraries\com\mojang\authlib\1.5.21\authlib-1.5.21.jar for job 'Version & Libraries'... (try 0)
[10:01:43 INFO]: Finished downloading C:\Users\kenne_000\AppData\Roaming\.minecraft\libraries\com\mojang\authlib\1.5.21\authlib-1.5.21.jar for job 'Version & Libraries': Local file matches local checksum, using that
[10:01:43 INFO]: Attempting to download C:\Users\kenne_000\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)
[10:01:43 INFO]: Finished downloading C:\Users\kenne_000\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
[10:01:43 INFO]: Attempting to download C:\Users\kenne_000\AppData\Roaming\.minecraft\libraries\org\lwjgl\lwjgl\lwjgl_util\2.9.4-nightly-20150209\lwjgl_util-2.9.4-nightly-20150209.jar for job 'Version & Libraries'... (try 0)
[10:01:43 INFO]: Finished downloading C:\Users\kenne_000\AppData\Roaming\.minecraft\libraries\org\lwjgl\lwjgl\lwjgl_util\2.9.4-nightly-20150209\lwjgl_util-2.9.4-nightly-20150209.jar for job 'Version & Libraries': Local file matches local checksum, using that
[10:01:43 INFO]: Finished downloading C:\Users\kenne_000\AppData\Roaming\.minecraft\libraries\net\java\dev\jna\jna\3.4.0\jna-3.4.0.jar for job 'Version & Libraries': Local file matches local checksum, using that
[10:01:43 INFO]: Attempting to download C:\Users\kenne_000\AppData\Roaming\.minecraft\libraries\com\paulscode\codecwav\20101023\codecwav-20101023.jar for job 'Version & Libraries'... (try 0)
[10:01:43 INFO]: Attempting to download C:\Users\kenne_000\AppData\Roaming\.minecraft\libraries\net\java\jinput\jinput\2.0.5\jinput-2.0.5.jar for job 'Version & Libraries'... (try 0)
[10:01:43 INFO]: Finished downloading C:\Users\kenne_000\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
[10:01:43 INFO]: Attempting to download C:\Users\kenne_000\AppData\Roaming\.minecraft\libraries\com\ibm\icu\icu4j-core-mojang\51.2\icu4j-core-mojang-51.2.jar for job 'Version & Libraries'... (try 0)
[10:01:43 INFO]: Finished downloading C:\Users\kenne_000\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
[10:01:43 INFO]: Attempting to download C:\Users\kenne_000\AppData\Roaming\.minecraft\libraries\com\google\code\gson\gson\2.2.4\gson-2.2.4.jar for job 'Version & Libraries'... (try 0)
[10:01:43 INFO]: Finished downloading C:\Users\kenne_000\AppData\Roaming\.minecraft\libraries\com\paulscode\librarylwjglopenal\20100824\librarylwjglopenal-20100824.jar for job 'Version & Libraries': Local file matches local checksum, using that
[10:01:43 INFO]: Attempting to download C:\Users\kenne_000\AppData\Roaming\.minecraft\libraries\org\apache\commons\commons-lang3\3.3.2\commons-lang3-3.3.2.jar for job 'Version & Libraries'... (try 0)
[10:01:43 INFO]: Finished downloading C:\Users\kenne_000\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
[10:01:43 INFO]: Attempting to download C:\Users\kenne_000\AppData\Roaming\.minecraft\libraries\commons-codec\commons-codec\1.9\commons-codec-1.9.jar for job 'Version & Libraries'... (try 0)
[10:01:43 INFO]: Finished downloading C:\Users\kenne_000\AppData\Roaming\.minecraft\libraries\com\paulscode\codecwav\20101023\codecwav-20101023.jar for job 'Version & Libraries': Local file matches local checksum, using that
[10:01:43 INFO]: Attempting to download C:\Users\kenne_000\AppData\Roaming\.minecraft\libraries\org\apache\httpcomponents\httpclient\4.3.3\httpclient-4.3.3.jar for job 'Version & Libraries'... (try 0)
[10:01:43 INFO]: Finished downloading C:\Users\kenne_000\AppData\Roaming\.minecraft\libraries\commons-codec\commons-codec\1.9\commons-codec-1.9.jar for job 'Version & Libraries': Local file matches local checksum, using that
[10:01:43 INFO]: Attempting to download C:\Users\kenne_000\AppData\Roaming\.minecraft\versions\15w44a\15w44a.jar for job 'Version & Libraries'... (try 0)
[10:01:43 INFO]: Finished downloading C:\Users\kenne_000\AppData\Roaming\.minecraft\libraries\org\apache\httpcomponents\httpclient\4.3.3\httpclient-4.3.3.jar for job 'Version & Libraries': Local file matches local checksum, using that
[10:01:43 INFO]: Finished downloading C:\Users\kenne_000\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
[10:01:43 INFO]: Finished downloading C:\Users\kenne_000\AppData\Roaming\.minecraft\libraries\org\apache\httpcomponents\httpcore\4.3.2\httpcore-4.3.2.jar for job 'Version & Libraries': Local file matches local checksum, using that
[10:01:43 INFO]: Finished downloading C:\Users\kenne_000\AppData\Roaming\.minecraft\libraries\com\paulscode\codecjorbis\20101023\codecjorbis-20101023.jar for job 'Version & Libraries': Local file matches local checksum, using that
[10:01:43 INFO]: Finished downloading C:\Users\kenne_000\AppData\Roaming\.minecraft\libraries\org\lwjgl\lwjgl\lwjgl\2.9.4-nightly-20150209\lwjgl-2.9.4-nightly-20150209.jar for job 'Version & Libraries': Local file matches local checksum, using that
[10:01:43 INFO]: Finished downloading C:\Users\kenne_000\AppData\Roaming\.minecraft\libraries\com\paulscode\libraryjavasound\20101123\libraryjavasound-20101123.jar for job 'Version & Libraries': Local file matches local checksum, using that
[10:01:43 INFO]: Finished downloading C:\Users\kenne_000\AppData\Roaming\.minecraft\libraries\org\apache\commons\commons-lang3\3.3.2\commons-lang3-3.3.2.jar for job 'Version & Libraries': Local file matches local checksum, using that
[10:01:43 INFO]: Finished downloading C:\Users\kenne_000\AppData\Roaming\.minecraft\libraries\net\java\dev\jna\platform\3.4.0\platform-3.4.0.jar for job 'Version & Libraries': Local file matches local checksum, using that
[10:01:43 INFO]: Finished downloading C:\Users\kenne_000\AppData\Roaming\.minecraft\libraries\org\lwjgl\lwjgl\lwjgl-platform\2.9.4-nightly-20150209\lwjgl-platform-2.9.4-nightly-20150209-natives-windows.jar for job 'Version & Libraries': Local file matches local checksum, using that
[10:01:43 INFO]: Finished downloading C:\Users\kenne_000\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
[10:01:43 INFO]: Finished downloading C:\Users\kenne_000\AppData\Roaming\.minecraft\libraries\com\paulscode\soundsystem\20120107\soundsystem-20120107.jar for job 'Version & Libraries': Local file matches local checksum, using that
[10:01:43 INFO]: Finished downloading C:\Users\kenne_000\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
[10:01:43 INFO]: Finished downloading C:\Users\kenne_000\AppData\Roaming\.minecraft\libraries\net\sf\jopt-simple\jopt-simple\4.6\jopt-simple-4.6.jar for job 'Version & Libraries': Local file matches local checksum, using that
[10:01:43 INFO]: Finished downloading C:\Users\kenne_000\AppData\Roaming\.minecraft\libraries\oshi-project\oshi-core\1.1\oshi-core-1.1.jar for job 'Version & Libraries': Local file matches local checksum, using that
[10:01:43 INFO]: Finished downloading C:\Users\kenne_000\AppData\Roaming\.minecraft\libraries\org\apache\commons\commons-compress\1.8.1\commons-compress-1.8.1.jar for job 'Version & Libraries': Local file matches local checksum, using that
[10:01:43 INFO]: Finished downloading C:\Users\kenne_000\AppData\Roaming\.minecraft\versions\15w44a\15w44a.jar for job 'Version & Libraries': Used own copy as it matched etag
[10:01:43 INFO]: Job 'Version & Libraries' finished successfully (took 0:00:01.313)
[10:01:43 INFO]: Launching game
[10:01:43 INFO]: Unpacking natives to C:\Users\kenne_000\AppData\Roaming\.minecraft\versions\15w44a\15w44a-natives-135705115112957
[10:01:44 INFO]: Launching in C:\Users\kenne_000\AppData\Roaming\.minecraft
[10:01:44 INFO]: Half command: C:\Program Files\Java\jre1.8.0_60\bin\javaw.exe -XX:HeapDumpPath=MojangTricksIntelDriversForPerformance_javaw.exe_minecraft.exe.heapdump -Xmx1G -XX:+UseConcMarkSweepGC -XX:+CMSIncrementalMode -XX:-UseAdaptiveSizePolicy -Xmn128M -Djava.library.path=C:\Users\kenne_000\AppData\Roaming\.minecraft\versions\15w44a\15w44a-natives-135705115112957 -cp C:\Users\kenne_000\AppData\Roaming\.minecraft\libraries\oshi-project\oshi-core\1.1\oshi-core-1.1.jar;C:\Users\kenne_000\AppData\Roaming\.minecraft\libraries\net\java\dev\jna\jna\3.4.0\jna-3.4.0.jar;C:\Users\kenne_000\AppData\Roaming\.minecraft\libraries\net\java\dev\jna\platform\3.4.0\platform-3.4.0.jar;C:\Users\kenne_000\AppData\Roaming\.minecraft\libraries\com\ibm\icu\icu4j-core-mojang\51.2\icu4j-core-mojang-51.2.jar;C:\Users\kenne_000\AppData\Roaming\.minecraft\libraries\net\sf\jopt-simple\jopt-simple\4.6\jopt-simple-4.6.jar;C:\Users\kenne_000\AppData\Roaming\.minecraft\libraries\com\paulscode\codecjorbis\20101023\codecjorbis-20101023.jar;C:\Users\kenne_000\AppData\Roaming\.minecraft\libraries\com\paulscode\codecwav\20101023\codecwav-20101023.jar;C:\Users\kenne_000\AppData\Roaming\.minecraft\libraries\com\paulscode\libraryjavasound\20101123\libraryjavasound-20101123.jar;C:\Users\kenne_000\AppData\Roaming\.minecraft\libraries\com\paulscode\librarylwjglopenal\20100824\librarylwjglopenal-20100824.jar;C:\Users\kenne_000\AppData\Roaming\.minecraft\libraries\com\paulscode\soundsystem\20120107\soundsystem-20120107.jar;C:\Users\kenne_000\AppData\Roaming\.minecraft\libraries\io\netty\netty-all\4.0.23.Final\netty-all-4.0.23.Final.jar;C:\Users\kenne_000\AppData\Roaming\.minecraft\libraries\com\google\guava\guava\17.0\guava-17.0.jar;C:\Users\kenne_000\AppData\Roaming\.minecraft\libraries\org\apache\commons\commons-lang3\3.3.2\commons-lang3-3.3.2.jar;C:\Users\kenne_000\AppData\Roaming\.minecraft\libraries\commons-io\commons-io\2.4\commons-io-2.4.jar;C:\Users\kenne_000\AppData\Roaming\.minecraft\libraries\commons-codec\commons-codec\1.9\commons-codec-1.9.jar;C:\Users\kenne_000\AppData\Roaming\.minecraft\libraries\net\java\jinput\jinput\2.0.5\jinput-2.0.5.jar;C:\Users\kenne_000\AppData\Roaming\.minecraft\libraries\net\java\jutils\jutils\1.0.0\jutils-1.0.0.jar;C:\Users\kenne_000\AppData\Roaming\.minecraft\libraries\com\google\code\gson\gson\2.2.4\gson-2.2.4.jar;C:\Users\kenne_000\AppData\Roaming\.minecraft\libraries\com\mojang\authlib\1.5.21\authlib-1.5.21.jar;C:\Users\kenne_000\AppData\Roaming\.minecraft\libraries\com\mojang\realms\1.7.24\realms-1.7.24.jar;C:\Users\kenne_000\AppData\Roaming\.minecraft\libraries\org\apache\commons\commons-compress\1.8.1\commons-compress-1.8.1.jar;C:\Users\kenne_000\AppData\Roaming\.minecraft\libraries\org\apache\httpcomponents\httpclient\4.3.3\httpclient-4.3.3.jar;C:\Users\kenne_000\AppData\Roaming\.minecraft\libraries\commons-logging\commons-logging\1.1.3\commons-logging-1.1.3.jar;C:\Users\kenne_000\AppData\Roaming\.minecraft\libraries\org\apache\httpcomponents\httpcore\4.3.2\httpcore-4.3.2.jar;C:\Users\kenne_000\AppData\Roaming\.minecraft\libraries\org\apache\logging\log4j\log4j-api\2.0-beta9\log4j-api-2.0-beta9.jar;C:\Users\kenne_000\AppData\Roaming\.minecraft\libraries\org\apache\logging\log4j\log4j-core\2.0-beta9\log4j-core-2.0-beta9.jar;C:\Users\kenne_000\AppData\Roaming\.minecraft\libraries\org\lwjgl\lwjgl\lwjgl\2.9.4-nightly-20150209\lwjgl-2.9.4-nightly-20150209.jar;C:\Users\kenne_000\AppData\Roaming\.minecraft\libraries\org\lwjgl\lwjgl\lwjgl_util\2.9.4-nightly-20150209\lwjgl_util-2.9.4-nightly-20150209.jar;C:\Users\kenne_000\AppData\Roaming\.minecraft\versions\15w44a\15w44a.jar net.minecraft.client.main.Main
[10:01:44 ERROR]: Couldn't launch game
java.io.IOException: Cannot run program "C:\Program Files\Java\jre1.8.0_60\bin\javaw.exe" (in directory "C:\Users\kenne_000\AppData\Roaming\.minecraft"): CreateProcess error=2, The system cannot find the file specified
at java.lang.ProcessBuilder.start(Unknown Source) ~[?:1.8.0_65]
at com.mojang.launcher.game.process.direct.DirectGameProcessFactory.startGame(DirectGameProcessFactory.java:14) ~[launcher.jar:1.6.44]
at net.minecraft.launcher.game.MinecraftGameRunner.launchGame(MinecraftGameRunner.java:218) [launcher.jar:1.6.44]
at com.mojang.launcher.game.runner.AbstractGameRunner.onDownloadJobFinished(AbstractGameRunner.java:186) [launcher.jar:1.6.44]
at com.mojang.launcher.updater.download.DownloadJob.popAndDownload(DownloadJob.java:122) [launcher.jar:1.6.44]
at com.mojang.launcher.updater.download.DownloadJob.access$000(DownloadJob.java:12) [launcher.jar:1.6.44]
at com.mojang.launcher.updater.download.DownloadJob$1.run(DownloadJob.java:86) [launcher.jar:1.6.44]
at java.util.concurrent.Executors$RunnableAdapter.call(Unknown Source) [?:1.8.0_65]
at java.util.concurrent.FutureTask.run(Unknown Source) [?:1.8.0_65]
at java.util.concurrent.ThreadPoolExecutor.runWorker(Unknown Source) [?:1.8.0_65]
at java.util.concurrent.ThreadPoolExecutor$Worker.run(Unknown Source) [?:1.8.0_65]
at java.lang.Thread.run(Unknown Source) [?:1.8.0_65]
Caused by: java.io.IOException: CreateProcess error=2, The system cannot find the file specified
at java.lang.ProcessImpl.create(Native Method) ~[?:1.8.0_65]
at java.lang.ProcessImpl.<init>(Unknown Source) ~[?:1.8.0_65]
at java.lang.ProcessImpl.start(Unknown Source) ~[?:1.8.0_65]
... 12 more
[10:01:44 INFO]: Deleting C:\Users\kenne_000\AppData\Roaming\.minecraft\versions\15w44a\15w44a-natives-135705115112957