Crashes before starting

Note:

java.lang.NullPointerException
	at java.lang.String.length(Unknown Source)
	at java.io.Win32FileSystem.prefixLength(Unknown Source)
	at java.io.File.<init>(Unknown Source)
	at sun.net.www.protocol.file.Handler.openConnection(Unknown Source)
	at sun.net.www.protocol.file.Handler.openConnection(Unknown Source)
	at java.net.URL.openConnection(Unknown Source)
	at sun.net.www.protocol.jar.JarURLConnection.<init>(Unknown Source)
	at sun.net.www.protocol.jar.Handler.openConnection(Unknown Source)
	at java.net.URL.openConnection(Unknown Source)
	at java.net.URLClassLoader.getResourceAsStream(Unknown Source)
	at java.lang.Class.getResourceAsStream(Unknown Source)
	at bjr.c(SourceFile:19)
	at bjq.b(SourceFile:117)
	at bir.a(SourceFile:122)
	at bir.c(SourceFile:86)
	at bis.b(SourceFile:80)

Is this still a concern in the current Minecraft version? If so, please update the affected versions in order to best aid Mojang ensuring bugs are still valid in the latest releases/pre-releases.

No answer, assuming no longer an issue.