I have never yet been able to log in with the new launcher on this particular computer. I have the Java freshly installed, and Minecraft freshly installed with a fresh folder, and no matter what I do, there is always this Exception that crashes the program. Even if this is something specific to this machine, it would be great if this exception were just handled with some sort of helpful error message that told me what exactly to do.

[20:54:43 INFO]: Minecraft Launcher 1.3.9 (through bootstrap 5) started on windows...
[20:54:43 INFO]: Refreshing local version list...
[20:54:43 INFO]: Current time is Mar 8, 2014 8:54:43 PM
[20:54:43 INFO]: System.getProperty('os.name') == 'Windows 7'
[20:54:43 INFO]: System.getProperty('os.version') == '6.1'
[20:54:43 INFO]: System.getProperty('os.arch') == 'x86'
[20:54:43 INFO]: System.getProperty('java.version') == '1.7.0_51'
[20:54:43 INFO]: System.getProperty('java.vendor') == 'Oracle Corporation'
[20:54:43 INFO]: System.getProperty('sun.arch.data.model') == '32'
[20:54:43 INFO]: Refreshing remote version list...
[20:54:44 INFO]: Refresh complete.
[20:54:44 INFO]: Loaded 0 profile(s); selected '(Default)'
[20:54:44 ERROR]: Unhandled exception in executor net.minecraft.launcher.updater.ExceptionalThreadPoolExecutor$ExceptionalFutureTask@35ef07
java.util.concurrent.ExecutionException: java.lang.NoSuchMethodError: org.apache.commons.io.FileUtils.writeStringToFile(Ljava/io/File;Ljava/lang/String;)V
at java.util.concurrent.FutureTask.report(Unknown Source) ~[?:1.7.0_51]
at java.util.concurrent.FutureTask.get(Unknown Source) ~[?:1.7.0_51]
at net.minecraft.launcher.updater.ExceptionalThreadPoolExecutor$ExceptionalFutureTask.done(ExceptionalThreadPoolExecutor.java:57) [launcher.jar:?]
at java.util.concurrent.FutureTask.finishCompletion(Unknown Source) [?:1.7.0_51]
at java.util.concurrent.FutureTask.setException(Unknown Source) [?:1.7.0_51]
at java.util.concurrent.FutureTask.run(Unknown Source) [?:1.7.0_51]
at java.util.concurrent.ThreadPoolExecutor.runWorker(Unknown Source) [?:1.7.0_51]
at java.util.concurrent.ThreadPoolExecutor$Worker.run(Unknown Source) [?:1.7.0_51]
at java.lang.Thread.run(Unknown Source) [?:1.7.0_51]
Caused by: java.lang.NoSuchMethodError: org.apache.commons.io.FileUtils.writeStringToFile(Ljava/io/File;Ljava/lang/String;)V
at net.minecraft.launcher.profile.ProfileManager.saveProfiles(ProfileManager.java:54) ~[launcher.jar:?]
at net.minecraft.launcher.Launcher.showLoginPrompt(Launcher.java:225) ~[launcher.jar:?]
at net.minecraft.launcher.Launcher.ensureLoggedIn(Launcher.java:186) ~[launcher.jar:?]
at net.minecraft.launcher.Launcher$1.run(Launcher.java:176) ~[launcher.jar:?]
at java.util.concurrent.Executors$RunnableAdapter.call(Unknown Source) ~[?:1.7.0_51]
... 4 more