Can't Launch Minecraft

This is what I get whenever I try and launch minecraft, I've tried re-downloading and i get the same thing. Any help is greatly appreciated.

Java HotSpot(TM) 64-Bit Server VM warning: Using incremental CMS is deprecated and will likely be removed in a future release
Completely ignored arguments: [--nativeLauncherVersion, 302]
[16:05:48] [Client thread/INFO]: Setting user: _Chef_Carrott_
[16:05:48] [Client thread/INFO]: (Session ID is <censored>)
Exception in thread "Client thread" java.lang.NullPointerException
at com.google.common.base.Preconditions.checkNotNull(Preconditions.java:213)
at com.google.common.collect.Lists$ReverseList.<init>(Lists.java:767)
at com.google.common.collect.Lists.reverse(Lists.java:759)
at lt.b(SourceFile:156)
at lt.<init>(SourceFile:43)
at net.minecraft.server.MinecraftServer.<init>(SourceFile:155)
at bpo.<init>(SourceFile:41)
at ave.<init>(SourceFile:293)
at net.minecraft.client.main.Main.main(SourceFile:124)

--- Double Post Merged, Jun 8, 2016, Original Post Date: Jun 8, 2016 ---

here is a screenshot

 

Update launcher

 

thank you both