Problem starting the game.

The problem is that when i press "play" the game seems to be starting, but suddenly the crash report pops up and says:

---- Minecraft Crash Report ----
// Uh... Did I do that?

Time: 17/06/14 21:25
Description: Unexpected error

java.lang.ArithmeticException: / by zero
	at bfb.b(SourceFile:685)
	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:
---------------------------------------------------------------------------------------

-- System Details --
Details:
	Minecraft Version: 1.6.2
	Operating System: Windows 7 (x86) version 6.1
	Java Version: 1.7.0_60, Oracle Corporation
	Java VM Version: Java HotSpot(TM) Client VM (mixed mode), Oracle Corporation
	Memory: 20692144 bytes (19 MB) / 69455872 bytes (66 MB) up to 1037959168 bytes (989 MB)
	JVM Flags: 2 total; -XX:HeapDumpPath=MojangTricksIntelDriversForPerformance_javaw.exe_minecraft.exe.heapdump -Xmx1G
	AABB Pool Size: 0 (0 bytes; 0 MB) allocated, 0 (0 bytes; 0 MB) used
	Suspicious classes: No suspicious classes found.
	IntCache: cache: 0, tcache: 0, allocated: 0, tallocated: 0
	Launched Version: 1.6.2
	LWJGL: 2.9.0
	OpenGL: GeForce 9500 GT/PCIe/SSE2 GL version 3.3.0, NVIDIA Corporation
	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: ~~ERROR~~ NullPointerException: null



ALSO the development console says:




[21:24:57 INFO]: Minecraft Launcher 1.4.4 (through bootstrap 5) started on windows...
[21:24:57 INFO]: Current time is Jun 17, 2014 9:24:57 PM
[21:24:57 INFO]: System.getProperty('os.name') == 'Windows 7'
[21:24:57 INFO]: System.getProperty('os.version') == '6.1'
[21:24:57 INFO]: System.getProperty('os.arch') == 'x86'
[21:24:57 INFO]: System.getProperty('java.version') == '1.7.0_60'
[21:24:57 INFO]: System.getProperty('java.vendor') == 'Oracle Corporation'
[21:24:57 INFO]: System.getProperty('sun.arch.data.model') == '32'
[21:24:58 INFO]: JFX has been detected & successfully loaded
[21:24:58 INFO]: Refreshing local version list...
[21:24:59 INFO]: Refreshing remote version list...
[21:25:00 INFO]: Refresh complete.
[21:25:00 INFO]: Loaded 1 profile(s); selected '(Predeterminado)'
[21:25:00 INFO]: Refreshing auth...
[21:25:00 INFO]: Logging in with access token
[21:25:09 INFO]: Getting syncinfo for selected version
[21:25:09 INFO]: Queueing library & version downloads
[21:25:10 INFO]: Download job 'Version & Libraries' started (16 threads, 19 files)
[21:25:10 INFO]: Attempting to download C:\Users\Martin\AppData\Roaming\.minecraft\libraries\argo\argo\2.25_fixed\argo-2.25_fixed.jar for job 'Version & Libraries'... (try 0)
[21:25:10 INFO]: Attempting to download C:\Users\Martin\AppData\Roaming\.minecraft\libraries\commons-io\commons-io\2.4\commons-io-2.4.jar for job 'Version & Libraries'... (try 0)
[21:25:10 INFO]: Attempting to download C:\Users\Martin\AppData\Roaming\.minecraft\libraries\net\java\jinput\jinput-platform\2.0.5\jinput-platform-2.0.5-natives-windows.jar for job 'Version & Libraries'... (try 0)
[21:25:10 INFO]: Attempting to download C:\Users\Martin\AppData\Roaming\.minecraft\libraries\org\lwjgl\lwjgl\lwjgl\2.9.0\lwjgl-2.9.0.jar for job 'Version & Libraries'... (try 0)
[21:25:10 INFO]: Attempting to download C:\Users\Martin\AppData\Roaming\.minecraft\libraries\com\paulscode\codecwav\20101023\codecwav-20101023.jar for job 'Version & Libraries'... (try 0)
[21:25:10 INFO]: Attempting to download C:\Users\Martin\AppData\Roaming\.minecraft\libraries\org\lwjgl\lwjgl\lwjgl-platform\2.9.0\lwjgl-platform-2.9.0-natives-windows.jar for job 'Version & Libraries'... (try 0)
[21:25:10 INFO]: Attempting to download C:\Users\Martin\AppData\Roaming\.minecraft\libraries\com\google\code\gson\gson\2.2.2\gson-2.2.2.jar for job 'Version & Libraries'... (try 0)
[21:25:10 INFO]: Attempting to download C:\Users\Martin\AppData\Roaming\.minecraft\libraries\com\paulscode\librarylwjglopenal\20100824\librarylwjglopenal-20100824.jar for job 'Version & Libraries'... (try 0)
[21:25:10 INFO]: Attempting to download C:\Users\Martin\AppData\Roaming\.minecraft\libraries\org\lwjgl\lwjgl\lwjgl_util\2.9.0\lwjgl_util-2.9.0.jar for job 'Version & Libraries'... (try 0)
[21:25:10 INFO]: Attempting to download C:\Users\Martin\AppData\Roaming\.minecraft\libraries\net\java\jinput\jinput\2.0.5\jinput-2.0.5.jar for job 'Version & Libraries'... (try 0)
[21:25:10 INFO]: Attempting to download C:\Users\Martin\AppData\Roaming\.minecraft\libraries\org\apache\commons\commons-lang3\3.1\commons-lang3-3.1.jar for job 'Version & Libraries'... (try 0)
[21:25:10 INFO]: Attempting to download C:\Users\Martin\AppData\Roaming\.minecraft\libraries\com\paulscode\codecjorbis\20101023\codecjorbis-20101023.jar for job 'Version & Libraries'... (try 0)
[21:25:10 INFO]: Attempting to download C:\Users\Martin\AppData\Roaming\.minecraft\libraries\com\paulscode\soundsystem\20120107\soundsystem-20120107.jar for job 'Version & Libraries'... (try 0)
[21:25:10 INFO]: Attempting to download C:\Users\Martin\AppData\Roaming\.minecraft\libraries\com\paulscode\libraryjavasound\20101123\libraryjavasound-20101123.jar for job 'Version & Libraries'... (try 0)
[21:25:10 INFO]: Attempting to download C:\Users\Martin\AppData\Roaming\.minecraft\libraries\net\java\jutils\jutils\1.0.0\jutils-1.0.0.jar for job 'Version & Libraries'... (try 0)
[21:25:10 INFO]: Attempting to download C:\Users\Martin\AppData\Roaming\.minecraft\libraries\net\sf\jopt-simple\jopt-simple\4.5\jopt-simple-4.5.jar for job 'Version & Libraries'... (try 0)
[21:25:14 INFO]: Download job 'Resources' skipped as there are no files to download
[21:25:14 INFO]: Job 'Resources' finished successfully (took 0:00:00.000)
[21:25:14 INFO]: Finished downloading C:\Users\Martin\AppData\Roaming\.minecraft\libraries\org\apache\commons\commons-lang3\3.1\commons-lang3-3.1.jar for job 'Version & Libraries': Local file matches local checksum, using that
[21:25:14 INFO]: Finished downloading C:\Users\Martin\AppData\Roaming\.minecraft\libraries\org\lwjgl\lwjgl\lwjgl\2.9.0\lwjgl-2.9.0.jar for job 'Version & Libraries': Local file matches local checksum, using that
[21:25:14 INFO]: Attempting to download C:\Users\Martin\AppData\Roaming\.minecraft\libraries\com\google\guava\guava\14.0\guava-14.0.jar for job 'Version & Libraries'... (try 0)
[21:25:14 INFO]: Finished downloading C:\Users\Martin\AppData\Roaming\.minecraft\libraries\com\google\code\gson\gson\2.2.2\gson-2.2.2.jar for job 'Version & Libraries': Local file matches local checksum, using that
[21:25:14 INFO]: Finished downloading C:\Users\Martin\AppData\Roaming\.minecraft\libraries\net\java\jinput\jinput\2.0.5\jinput-2.0.5.jar for job 'Version & Libraries': Local file matches local checksum, using that
[21:25:14 INFO]: Finished downloading C:\Users\Martin\AppData\Roaming\.minecraft\libraries\org\lwjgl\lwjgl\lwjgl-platform\2.9.0\lwjgl-platform-2.9.0-natives-windows.jar for job 'Version & Libraries': Local file matches local checksum, using that
[21:25:14 INFO]: Finished downloading C:\Users\Martin\AppData\Roaming\.minecraft\libraries\com\paulscode\codecjorbis\20101023\codecjorbis-20101023.jar for job 'Version & Libraries': Local file matches local checksum, using that
[21:25:14 INFO]: Attempting to download C:\Users\Martin\AppData\Roaming\.minecraft\libraries\org\bouncycastle\bcprov-jdk15on\1.47\bcprov-jdk15on-1.47.jar for job 'Version & Libraries'... (try 0)
[21:25:14 INFO]: Attempting to download C:\Users\Martin\AppData\Roaming\.minecraft\versions\1.6.2\1.6.2.jar for job 'Version & Libraries'... (try 0)
[21:25:14 INFO]: Finished downloading C:\Users\Martin\AppData\Roaming\.minecraft\libraries\com\paulscode\soundsystem\20120107\soundsystem-20120107.jar for job 'Version & Libraries': Local file matches local checksum, using that
[21:25:14 INFO]: Finished downloading C:\Users\Martin\AppData\Roaming\.minecraft\libraries\commons-io\commons-io\2.4\commons-io-2.4.jar for job 'Version & Libraries': Local file matches local checksum, using that
[21:25:14 INFO]: Finished downloading C:\Users\Martin\AppData\Roaming\.minecraft\libraries\org\lwjgl\lwjgl\lwjgl_util\2.9.0\lwjgl_util-2.9.0.jar for job 'Version & Libraries': Local file matches local checksum, using that
[21:25:14 INFO]: Finished downloading C:\Users\Martin\AppData\Roaming\.minecraft\libraries\net\java\jinput\jinput-platform\2.0.5\jinput-platform-2.0.5-natives-windows.jar for job 'Version & Libraries': Local file matches local checksum, using that
[21:25:14 INFO]: Finished downloading C:\Users\Martin\AppData\Roaming\.minecraft\libraries\com\paulscode\librarylwjglopenal\20100824\librarylwjglopenal-20100824.jar for job 'Version & Libraries': Local file matches local checksum, using that
[21:25:14 INFO]: Finished downloading C:\Users\Martin\AppData\Roaming\.minecraft\libraries\com\paulscode\libraryjavasound\20101123\libraryjavasound-20101123.jar for job 'Version & Libraries': Local file matches local checksum, using that
[21:25:14 INFO]: Finished downloading C:\Users\Martin\AppData\Roaming\.minecraft\libraries\argo\argo\2.25_fixed\argo-2.25_fixed.jar for job 'Version & Libraries': Local file matches local checksum, using that
[21:25:14 INFO]: Finished downloading C:\Users\Martin\AppData\Roaming\.minecraft\libraries\net\java\jutils\jutils\1.0.0\jutils-1.0.0.jar for job 'Version & Libraries': Local file matches local checksum, using that
[21:25:14 INFO]: Finished downloading C:\Users\Martin\AppData\Roaming\.minecraft\libraries\net\sf\jopt-simple\jopt-simple\4.5\jopt-simple-4.5.jar for job 'Version & Libraries': Local file matches local checksum, using that
[21:25:14 INFO]: Finished downloading C:\Users\Martin\AppData\Roaming\.minecraft\libraries\com\paulscode\codecwav\20101023\codecwav-20101023.jar for job 'Version & Libraries': Local file matches local checksum, using that
[21:25:15 INFO]: Finished downloading C:\Users\Martin\AppData\Roaming\.minecraft\libraries\org\bouncycastle\bcprov-jdk15on\1.47\bcprov-jdk15on-1.47.jar for job 'Version & Libraries': Local file matches local checksum, using that
[21:25:15 INFO]: Finished downloading C:\Users\Martin\AppData\Roaming\.minecraft\libraries\com\google\guava\guava\14.0\guava-14.0.jar for job 'Version & Libraries': Local file matches local checksum, using that
[21:25:15 INFO]: Finished downloading C:\Users\Martin\AppData\Roaming\.minecraft\versions\1.6.2\1.6.2.jar for job 'Version & Libraries': Used own copy as it matched etag
[21:25:15 INFO]: Job 'Version & Libraries' finished successfully (took 0:00:04.709)
[21:25:15 INFO]: Launching game
[21:25:15 INFO]: Unpacking natives to C:\Users\Martin\AppData\Roaming\.minecraft\versions\1.6.2\1.6.2-natives-14368237163024
[21:25:15 INFO]: Reconstructing virtual assets folder at C:\Users\Martin\AppData\Roaming\.minecraft\assets\virtual\legacy
[21:25:16 INFO]: Launching in C:\Users\Martin\AppData\Roaming\.minecraft
[21:25:16 INFO]: Half command: C:\Program Files\Java\jre7\bin\javaw.exe -XX:HeapDumpPath=MojangTricksIntelDriversForPerformance_javaw.exe_minecraft.exe.heapdump -Xmx1G -Dfml.ignorePatchDiscrepancies=true -Dfml.ignoreInvalidMinecraftCertificates=true -Djava.library.path=C:\Users\Martin\AppData\Roaming\.minecraft\versions\1.6.2\1.6.2-natives-14368237163024 -cp C:\Users\Martin\AppData\Roaming\.minecraft\libraries\net\sf\jopt-simple\jopt-simple\4.5\jopt-simple-4.5.jar;C:\Users\Martin\AppData\Roaming\.minecraft\libraries\com\paulscode\codecjorbis\20101023\codecjorbis-20101023.jar;C:\Users\Martin\AppData\Roaming\.minecraft\libraries\com\paulscode\codecwav\20101023\codecwav-20101023.jar;C:\Users\Martin\AppData\Roaming\.minecraft\libraries\com\paulscode\libraryjavasound\20101123\libraryjavasound-20101123.jar;C:\Users\Martin\AppData\Roaming\.minecraft\libraries\com\paulscode\librarylwjglopenal\20100824\librarylwjglopenal-20100824.jar;C:\Users\Martin\AppData\Roaming\.minecraft\libraries\com\paulscode\soundsystem\20120107\soundsystem-20120107.jar;C:\Users\Martin\AppData\Roaming\.minecraft\libraries\argo\argo\2.25_fixed\argo-2.25_fixed.jar;C:\Users\Martin\AppData\Roaming\.minecraft\libraries\org\bouncycastle\bcprov-jdk15on\1.47\bcprov-jdk15on-1.47.jar;C:\Users\Martin\AppData\Roaming\.minecraft\libraries\com\google\guava\guava\14.0\guava-14.0.jar;C:\Users\Martin\AppData\Roaming\.minecraft\libraries\org\apache\commons\commons-lang3\3.1\commons-lang3-3.1.jar;C:\Users\Martin\AppData\Roaming\.minecraft\libraries\commons-io\commons-io\2.4\commons-io-2.4.jar;C:\Users\Martin\AppData\Roaming\.minecraft\libraries\net\java\jinput\jinput\2.0.5\jinput-2.0.5.jar;C:\Users\Martin\AppData\Roaming\.minecraft\libraries\net\java\jutils\jutils\1.0.0\jutils-1.0.0.jar;C:\Users\Martin\AppData\Roaming\.minecraft\libraries\com\google\code\gson\gson\2.2.2\gson-2.2.2.jar;C:\Users\Martin\AppData\Roaming\.minecraft\libraries\org\lwjgl\lwjgl\lwjgl\2.9.0\lwjgl-2.9.0.jar;C:\Users\Martin\AppData\Roaming\.minecraft\libraries\org\lwjgl\lwjgl\lwjgl_util\2.9.0\lwjgl_util-2.9.0.jar;C:\Users\Martin\AppData\Roaming\.minecraft\versions\1.6.2\1.6.2.jar net.minecraft.client.main.Main
[21:25:16 INFO]: Looking for orphaned versions to clean up...
[21:25:17 INFO]: Looking for old natives & assets to clean up...
[21:25:17 INFO]: Client> 2014-06-17 21:25:17 [CLIENT] [INFO] Setting user: TicoMagic
[21:25:17 INFO]: Client> 2014-06-17 21:25:17 [CLIENT] [INFO] (Session ID is token:73cdec86ad9345429525673344b41025:ac6c6ebc62944e0d938343a8f49f6833)
[21:25:18 INFO]: Client> 2014-06-17 21:25:18 [CLIENT] [INFO] LWJGL Version: 2.9.0
[21:25:19 INFO]: Client> 2014-06-17 21:25:19 [CLIENT] [INFO] Reloading ResourceManager: Default
[21:25:20 INFO]: Client> 
[21:25:20 INFO]: Client> Starting up SoundSystem...
[21:25:20 INFO]: Client> Initializing LWJGL OpenAL
[21:25:20 INFO]: Client>     (The LWJGL binding of OpenAL.  For more information, see http://www.lwjgl.org)
[21:25:20 INFO]: Client> 2014-06-17 21:25:20 [CLIENT] [SEVERE] ########## GL ERROR ##########
[21:25:20 INFO]: Client> 2014-06-17 21:25:20 [CLIENT] [SEVERE] @ Pre startup
[21:25:20 INFO]: Client> 2014-06-17 21:25:20 [CLIENT] [SEVERE] 1281: Invalid value
[21:25:21 INFO]: Client> OpenAL initialized.
[21:25:21 INFO]: Client> 
[21:25:21 INFO]: Client> java.lang.ArithmeticException: / by zero
[21:25:21 INFO]: Client> 	at bfb.b(SourceFile:685)
[21:25:21 INFO]: Client> 	at ats.S(SourceFile:686)
[21:25:21 INFO]: Client> 	at ats.d(SourceFile:619)
[21:25:21 INFO]: Client> 	at net.minecraft.client.main.Main.main(SourceFile:101)
[21:25:21 INFO]: Client> ---- Minecraft Crash Report ----
[21:25:21 INFO]: Client> // You should try our sister game, Minceraft!
[21:25:21 INFO]: Client> 
[21:25:21 INFO]: Client> Time: 17/06/14 21:25
[21:25:21 INFO]: Client> Description: Unexpected error
[21:25:21 INFO]: Client> 
[21:25:21 INFO]: Client> java.lang.ArithmeticException: / by zero
[21:25:21 INFO]: Client> 	at bfb.b(SourceFile:685)
[21:25:21 INFO]: Client> 	at ats.S(SourceFile:686)
[21:25:21 INFO]: Client> 	at ats.d(SourceFile:619)
[21:25:21 INFO]: Client> 	at net.minecraft.client.main.Main.main(SourceFile:101)
[21:25:21 INFO]: Client> 
[21:25:21 INFO]: Client> 
[21:25:21 INFO]: Client> A detailed walkthrough of the error, its code path and all known details is as follows:
[21:25:21 INFO]: Client> ---------------------------------------------------------------------------------------
[21:25:21 INFO]: Client> 
[21:25:21 INFO]: Client> -- System Details --
[21:25:21 INFO]: Client> Details:
[21:25:21 INFO]: Client> 	Minecraft Version: 1.6.2
[21:25:21 INFO]: Client> 	Operating System: Windows 7 (x86) version 6.1
[21:25:21 INFO]: Client> 	Java Version: 1.7.0_60, Oracle Corporation
[21:25:21 INFO]: Client> 	Java VM Version: Java HotSpot(TM) Client VM (mixed mode), Oracle Corporation
[21:25:21 INFO]: Client> 	Memory: 20692144 bytes (19 MB) / 69455872 bytes (66 MB) up to 1037959168 bytes (989 MB)
[21:25:21 INFO]: Client> 	JVM Flags: 2 total; -XX:HeapDumpPath=MojangTricksIntelDriversForPerformance_javaw.exe_minecraft.exe.heapdump -Xmx1G
[21:25:21 INFO]: Client> 	AABB Pool Size: 0 (0 bytes; 0 MB) allocated, 0 (0 bytes; 0 MB) used
[21:25:21 INFO]: Client> 	Suspicious classes: No suspicious classes found.
[21:25:21 INFO]: Client> 	IntCache: cache: 0, tcache: 0, allocated: 0, tallocated: 0
[21:25:21 INFO]: Client> 	Launched Version: 1.6.2
[21:25:21 INFO]: Client> 	LWJGL: 2.9.0
[21:25:21 INFO]: Client> 	OpenGL: GeForce 9500 GT/PCIe/SSE2 GL version 3.3.0, NVIDIA Corporation
[21:25:21 INFO]: Client> 	Is Modded: Probably not. Jar signature remains and client brand is untouched.
[21:25:21 INFO]: Client> 	Type: Client (map_client.txt)
[21:25:21 INFO]: Client> 	Resource Pack: Default
[21:25:21 INFO]: Client> 	Current Language: English (US)
[21:25:21 INFO]: Client> 	Profiler Position: N/A (disabled)
[21:25:21 INFO]: Client> 	Vec3 Pool Size: ~~ERROR~~ NullPointerException: null
[21:25:21 INFO]: Client> #@!@# Game crashed! Crash report saved to: #@!@# C:\Users\Martin\AppData\Roaming\.minecraft\crash-reports\crash-2014-06-17_21.25.21-client.txt
[21:25:21 INFO]: Client> AL lib: (EE) alc_cleanup: 1 device not closed
[21:25:21 ERROR]: Game ended with bad state (exit code -1)
[21:25:21 INFO]: Ignoring visibility rule and showing launcher due to a game crash
[21:25:21 INFO]: Crash report detected, opening: C:\Users\Martin\AppData\Roaming\.minecraft\crash-reports\crash-2014-06-17_21.25.21-client.txt
[21:25:21 INFO]: Deleting C:\Users\Martin\AppData\Roaming\.minecraft\versions\1.6.2\1.6.2-natives-14368237163024
[21:25:21 WARN]: Couldn't delete C:\Users\Martin\AppData\Roaming\.minecraft\versions\1.6.2\1.6.2-natives-14368237163024 - scheduling for deletion upon exit
[21:25:22 INFO]: Reported crash to Mojang (ID 0)

I've seen someone had the same problem and the solution was to open the options.txt and change "skin:epic" to "skin:default", so i tried to do that too but the skin was already set as "default".

Please help me!!