I put in all my information and log in but i cant play multiplayer or single player. Not cool.

Please attach the crash report. Without it, we cannot help you at all. 😞

Try to re download the launcher

still doesnt work

Minecraft Crash Report ----
// Why did you do that?

Time: 7/21/13 12:42 PM
Description: Unexpected error

java.lang.NullPointerException
at bfi.a(SourceFile:1343)
at bfb.a(SourceFile:810)
at bfb.b(SourceFile:695)
at ats.S(SourceFile:686)
at ats.d(SourceFile:619)
at net.minecraft.client.main.Main.main(SourceFile:101)

A detailed walkthrough of the error, its code path and all known details is as follows:
---------------------------------------------------------------------------------------

– Head –
Stacktrace:
at bfi.a(SourceFile:1343)
at bfb.a(SourceFile:810)

– Affected level –
Details:
Level name: MpServer
All players: 1 total; [bdf['NoodleDoodleMan'/182, l='MpServer', x=8.50, y=66.62, z=8.50]]
Chunk stats: MultiplayerChunkCache: 0
Level seed: 0
Level generator: ID 00 - default, ver 1. Features enabled: false
Level generator options:
Level spawn location: World: (244,64,252), Chunk: (at 4,4,12 in 15,15; contains blocks 240,0,240 to 255,255,255), Region: (0,0; contains chunks 0,0 to 31,31, blocks 0,0,0 to 511,255,511)
Level time: 17422 game time, 17422 day time
Level dimension: 0
Level storage version: 0x00000 - Unknown?
Level weather: Rain time: 0 (now: false), thunder time: 0 (now: false)
Level game mode: Game mode: survival (ID 0). Hardcore: false. Cheats: false
Forced entities: 1 total; [bdf['NoodleDoodleMan'/182, l='MpServer', x=8.50, y=66.62, z=8.50]]
Retry entities: 0 total; []
Server brand: vanilla
Server type: Integrated singleplayer server
Stacktrace:
at bda.a(SourceFile:284)
at ats.b(SourceFile:1761)
at ats.d(SourceFile:633)
at net.minecraft.client.main.Main.main(SourceFile:101)

– System Details –
Details:
Minecraft Version: 1.6.2
Operating System: Windows 7 (amd64) version 6.1
Java Version: 1.7.0_10, Oracle Corporation
Java VM Version: Java HotSpot(TM) 64-Bit Server VM (mixed mode), Oracle Corporation
Memory: 178317832 bytes (170 MB) / 251985920 bytes (240 MB) up to 954466304 bytes (910 MB)
JVM Flags: 1 total; -Xmx1G
AABB Pool Size: 3 (168 bytes; 0 MB) allocated, 3 (168 bytes; 0 MB) used
Suspicious classes: No suspicious classes found.
IntCache: cache: 0, tcache: 0, allocated: 3, tallocated: 63
Launched Version: 1.6.2
LWJGL: 2.9.0
OpenGL: Intel(R) HD Graphics GL version 2.1.0 - Build 8.15.10.2342, Intel
Is Modded: Probably not. Jar signature remains and client brand is untouched.
Type: Client (map_client.txt)
Resource Pack: Default
Current Language: English (US)
Profiler Position: N/A (disabled)
Vec3 Pool Size: 17 (952 bytes; 0 MB) allocated, 17 (952 bytes; 0 MB) used

Duplicate of MC-20165.