[MCL-415] Won't start if game directory doen't exist

If you choose a game directory that doesn't exist the game won't start.
Console(some of it might be Dutch):
http://pastebin.com/jpjnii0H
Linked issues

is duplicated by 1

MCL-465 [0.9.3 (Dev)] Profile that points to invalid directory keeps game from launching Resolved
Comments 1

kumasasa 2013-06-26T05:34:30Z
Launching game
Unpacking natives to C:\Users\...\AppData\Roaming\.minecraft\versions\13w23b\13w23b-natives-260227889301667
Launching in C:\Users\...\AppData\Roaming\.minecraft\snapshot
Running: C:\Program Files\Java\jre7\bin\javaw.exe -Xmx2G -Djava.library.path=C:\Users\...\AppData\Roaming\.minecraft\versions\13w23b\13w23b-natives-260227889301667 -cp C:\Users\...\AppData\Roaming\.minecraft\libraries\net\sf\jopt-simple\jopt-simple\4.5\jopt-simple-4.5.jar;C:\Users\...\AppData\Roaming\.minecraft\libraries\com\paulscode\codecjorbis\20101023\codecjorbis-20101023.jar;C:\Users\...\AppData\Roaming\.minecraft\libraries\com\paulscode\codecwav\20101023\codecwav-20101023.jar;C:\Users\...\AppData\Roaming\.minecraft\libraries\com\paulscode\libraryjavasound\20101123\libraryjavasound-20101123.jar;C:\Users\...\AppData\Roaming\.minecraft\libraries\com\paulscode\librarylwjglopenal\20100824\librarylwjglopenal-20100824.jar;C:\Users\...\AppData\Roaming\.minecraft\libraries\com\paulscode\soundsystem\20120107\soundsystem-20120107.jar;C:\Users\...\AppData\Roaming\.minecraft\libraries\org\lwjgl\lwjgl\lwjgl\2.9.0\lwjgl-2.9.0.jar;C:\Users\...\AppData\Roaming\.minecraft\libraries\org\lwjgl\lwjgl\lwjgl_util\2.9.0\lwjgl_util-2.9.0.jar;C:\Users\...\AppData\Roaming\.minecraft\libraries\argo\argo\2.25_fixed\argo-2.25_fixed.jar;C:\Users\...\AppData\Roaming\.minecraft\libraries\org\bouncycastle\bcprov-jdk15on\1.47\bcprov-jdk15on-1.47.jar;C:\Users\...\AppData\Roaming\.minecraft\libraries\com\google\guava\guava\14.0\guava-14.0.jar;C:\Users\...\AppData\Roaming\.minecraft\libraries\org\apache\commons\commons-lang3\3.1\commons-lang3-3.1.jar;C:\Users\...\AppData\Roaming\.minecraft\libraries\commons-io\commons-io\2.4\commons-io-2.4.jar;C:\Users\...\AppData\Roaming\.minecraft\libraries\net\java\jinput\jinput\2.0.5\jinput-2.0.5.jar;C:\Users\...\AppData\Roaming\.minecraft\libraries\net\java\jutils\jutils\1.0.0\jutils-1.0.0.jar;C:\Users\...\AppData\Roaming\.minecraft\libraries\com\google\code\gson\gson\2.2.2\gson-2.2.2.jar;C:\Users\...\AppData\Roaming\.minecraft\versions\13w23b\13w23b.jar net.minecraft.client.main.Main --username ...f --session -5340959978899899289 --version 13w23b --workDir C:\Users\...\AppData\Roaming\.minecraft\snapshot
Couldn't launch game
java.io.IOException: Cannot run program "C:\Program Files\Java\jre7\bin\javaw.exe" (in directory "C:\Users\...\AppData\Roaming\.minecraft\snapshot"): CreateProcess error=267, De mapnaam is ongeldig
	at java.lang.ProcessBuilder.start(Unknown Source)
	at net.minecraft.launcher.process.JavaProcessLauncher.start(JavaProcessLauncher.java:25)
	at net.minecraft.launcher.GameLauncher.launchGame(GameLauncher.java:205)
	at net.minecraft.launcher.GameLauncher.onDownloadJobFinished(GameLauncher.java:352)
	at net.minecraft.launcher.updater.download.DownloadJob.popAndDownload(DownloadJob.java:95)
	at net.minecraft.launcher.updater.download.DownloadJob.access$000(DownloadJob.java:10)
	at net.minecraft.launcher.updater.download.DownloadJob$1.run(DownloadJob.java:65)
	at java.util.concurrent.Executors$RunnableAdapter.call(Unknown Source)
	at java.util.concurrent.FutureTask$Sync.innerRun(Unknown Source)
	at java.util.concurrent.FutureTask.run(Unknown Source)
	at java.util.concurrent.ThreadPoolExecutor.runWorker(Unknown Source)
	at java.util.concurrent.ThreadPoolExecutor$Worker.run(Unknown Source)
	at java.lang.Thread.run(Unknown Source)
Caused by: java.io.IOException: CreateProcess error=267, De mapnaam is ongeldig
	at java.lang.ProcessImpl.create(Native Method)
	at java.lang.ProcessImpl.<init>(Unknown Source)
	at java.lang.ProcessImpl.start(Unknown Source)
	... 13 more