I DONT EVEN KNOW

Minecraft has crashed!      
      ----------------------      

Minecraft has stopped running because it encountered a problem; Ticking entity
A full error report has been saved to C:\Users\Hackbros1\AppData\Roaming\.minecraft\crash-reports\crash-2012-11-01_17.30.01-client.txt for your convenience. Please include a copy of that file (Not this screen!) if you report this crash to anyone; without it, they will not be able to help fix the crash :(



--- BEGIN ERROR REPORT 1cc2c4b4 --------
Full report at:
C:\Users\Hackbros1\AppData\Roaming\.minecraft\crash-reports\crash-2012-11-01_17.30.01-client.txt

java.lang.NullPointerException
	at bed.b(SourceFile:188)
	at beb.a(SourceFile:62)
	at py.j_(SourceFile:274)
	at xv.a(SourceFile:1315)
	at xv.g(SourceFile:1294)
	at xv.h(SourceFile:1194)
	at net.minecraft.client.Minecraft.l(SourceFile:1283)
	at net.minecraft.client.Minecraft.J(SourceFile:582)
	at net.minecraft.client.Minecraft.run(SourceFile:534)
	at java.lang.Thread.run(Unknown Source)
--- END ERROR REPORT 64395a5f ----------

I thought i could, join a server
but this popped up yay!