'Error" when I try and load the game

So I just got minecraft pc yesterday and loaded up today. I knew the familiar screen the news and everything when it first loaded up (I've played it at my friends' house before) so I clicked 'Play' it first says downloading then launching then it goes away. then reappears with this on it:

Exception in thread "main" java.lang.ExceptionInInitializerError
	at org.apache.logging.log4j.util.PropertiesUtil.<init>(PropertiesUtil.java:71)
	at org.apache.logging.log4j.util.PropertiesUtil.<clinit>(PropertiesUtil.java:31)
	at org.apache.logging.log4j.status.StatusLogger.<clinit>(StatusLogger.java:48)
	at org.apache.logging.log4j.LogManager.<clinit>(LogManager.java:44)
	at ave.<clinit>(SourceFile:145)
	at net.minecraft.client.main.Main.main(SourceFile:41)
Caused by: java.lang.NullPointerException
	at org.apache.logging.log4j.util.ProviderUtil.<clinit>(ProviderUtil.java:70)
	... 6 more
Java HotSpot(TM) 64-Bit Server VM warning: Using incremental CMS is deprecated and will likely be removed in a future release

I've been searching the web for ages but nothing has helped plz help