NicolasD

Same with the new snapshot

Only the snapshots works with the launcher (13w16a, 13w16b, 13w17a)

my log :

Launcher 0.5 (Dev) (through bootstrap 1) started on windows...
System.getProperty('os.name') == 'Windows 8'
System.getProperty('os.version') == '6.2'
System.getProperty('os.arch') == 'amd64'
System.getProperty('java.version') == '1.7.0_13'
System.getProperty('java.vendor') == 'Oracle Corporation'
Delta time to compare resources: 315 ms
Download job 'Resources' skipped as there are no files to download
Job 'Resources' finished successfully
Trying to log in...
Logged in successfully
Getting syncinfo for selected version
Queueing library & version downloads
Download job 'Version & Libraries' started (8 threads, 1 files)
Finished downloading C:\Users\Hayvil\AppData\Roaming\.minecraft\versions\1.5.2\1.5.2.jar for job 'Version & Libraries': Used own copy as it matched etag
Job 'Version & Libraries' finished successfully
Launching game
Launching!
Running: "C:\Program Files\Java\jre7\bin\java" -Xmx1G -Djava.library.path=C:\Users\Hayvil\AppData\Roaming\.minecraft\versions\1.5.2\1.5.2-natives -cp C:\Users\Hayvil\AppData\Roaming\.minecraft\libraries\net\minecraft\launchwrapper\1.0\launchwrapper-1.0.jar;C:\Users\Hayvil\AppData\Roaming\.minecraft\libraries\net\sf\jopt-simple\jopt-simple\4.4\jopt-simple-4.4.jar;C:\Users\Hayvil\AppData\Roaming\.minecraft\libraries\org\ow2\asm\asm-all\4.1\asm-all-4.1.jar;C:\Users\Hayvil\AppData\Roaming\.minecraft\libraries\org\lwjgl\lwjgl\lwjgl\2.9.0\lwjgl-2.9.0.jar;C:\Users\Hayvil\AppData\Roaming\.minecraft\libraries\org\lwjgl\lwjgl\lwjgl_util\2.9.0\lwjgl_util-2.9.0.jar;C:\Users\Hayvil\AppData\Roaming\.minecraft\libraries\net\java\jinput\jinput\2.0.5\jinput-2.0.5.jar;C:\Users\Hayvil\AppData\Roaming\.minecraft\libraries\net\java\jutils\jutils\1.0.0\jutils-1.0.0.jar;C:\Users\Hayvil\AppData\Roaming\.minecraft\versions\1.5.2\1.5.2.jar net.minecraft.launchwrapper.Launch Hayvil -1612587593831146456 --workDir C:\Users\Hayvil\AppData\Roaming\.minecraft

YOU CAN CLOSE THIS LAUNCHER IF THE GAME STARTED OK ----

YOU CAN CLOSE THIS LAUNCHER IF THE GAME STARTED OK ----

YOU CAN CLOSE THIS LAUNCHER IF THE GAME STARTED OK ----

(We'll do this automatically later ;D) ----
Client> HELLO FROM WRAPPER
Client> Exception in thread "main" joptsimple.UnrecognizedOptionException: '1' is not a recognized option
Client> at joptsimple.OptionException.unrecognizedOption(OptionException.java:89)
Client> at joptsimple.OptionParser.validateOptionCharacters(OptionParser.java:538)
Client> at joptsimple.OptionParser.handleShortOptionCluster(OptionParser.java:463)
Client> at joptsimple.OptionParser.handleShortOptionToken(OptionParser.java:458)
Client> at joptsimple.OptionParserState$2.handleArgument(OptionParserState.java:56)
Client> at joptsimple.OptionParser.parse(OptionParser.java:385)
Client> at net.minecraft.launchwrapper.Launch.launch(Launch.java:31)
Client> at net.minecraft.launchwrapper.Launch.main(Launch.java:17)
Game ended with bad state (exit code 1)

You need to download the new launcher. I had the same problem, it worked for me. news : http://mojang.com/2013/04/1-5-2-pre-release-and-13w17a-snapshot-oh-my/