Whenever I try to play Minecraft 1.4.7, it crashes. I tried deleting the folder and re-downloading it, but it didn't work.
Minecraft Report:
--- BEGIN ERROR REPORT 30bd38ba --------
Full report at:
C:\Users\Sophia_2\AppData\Roaming\.minecraft\crash-reports\crash-2014-02-18_15.31.29-client.txt
Please show that file to Mojang, NOT just this screen!

Generated 18/02/14 15:31

-- System Details --
Details:
Minecraft Version: 1.4.7
Operating System: Windows 7 (x86) version 6.1
Java Version: 1.7.0_11, Oracle Corporation
Java VM Version: Java HotSpot(TM) Client VM (mixed mode), Oracle Corporation
Memory: 13435088 bytes (12 MB) / 42692608 bytes (40 MB) up to 518979584 bytes (494 MB)
JVM Flags: 2 total; -XX:HeapDumpPath=MojangTricksIntelDriversForPerformance_javaw.exe_minecraft.exe.heapdump -Xmx512M
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
LWJGL: 2.9.0
OpenGL: AMD Radeon HD 5450 GL version 4.3.12458 Compatibility Profile Context 13.200.0.0, ATI Technologies Inc.
Is Modded: Very likely; Jar signature invalidated
Type: Client (map_client.txt)
Texture Pack: Default
Profiler Position: N/A (disabled)
Vec3 Pool Size: ~~ERROR~~ NullPointerException: null

java.lang.NullPointerException
at java.io.Reader.<init>(Unknown Source)
at java.io.InputStreamReader.<init>(Unknown Source)
at bn.a(SourceFile:56)
at bn.a(SourceFile:91)
at net.minecraft.client.Minecraft.a(SourceFile:249)
at asq.a(SourceFile:56)
at net.minecraft.client.Minecraft.run(SourceFile:515)
at java.lang.Thread.run(Unknown Source)
--- END ERROR REPORT b7f3b3e3 ----------

Launcher Report:
[15:30:54 INFO]: Minecraft Launcher 1.3.10 (through bootstrap 4) started on windows...
[15:30:54 INFO]: Current time is Feb 18, 2014 3:30:54 PM
[15:30:54 INFO]: System.getProperty('os.name') == 'Windows 7'
[15:30:54 INFO]: System.getProperty('os.version') == '6.1'
[15:30:54 INFO]: System.getProperty('os.arch') == 'x86'
[15:30:54 INFO]: System.getProperty('java.version') == '1.7.0_11'
[15:30:54 INFO]: System.getProperty('java.vendor') == 'Oracle Corporation'
[15:30:54 INFO]: System.getProperty('sun.arch.data.model') == '32'
[15:30:54 INFO]: Refreshing local version list...
[15:30:54 INFO]: Refreshing remote version list...
[15:30:55 INFO]: Refresh complete.
[15:30:55 INFO]: Loaded 3 profile(s); selected 'TheIcyDinosaur'
[15:30:55 INFO]: Refreshing auth...
[15:30:55 INFO]: Logging in with access token
[15:31:07 INFO]: Getting syncinfo for selected version
[15:31:07 INFO]: Queueing library & version downloads
[15:31:08 INFO]: Installed PartialVersion{id='1.4.7', updateTime=Tue Aug 06 12:00:00 BST 2013, releaseTime=Thu Dec 27 22:00:00 GMT 2012, type=RELEASE}
[15:31:08 INFO]: Download job 'Version & Libraries' started (16 threads, 11 files)
[15:31:08 INFO]: Attempting to download C:\Users\Sophia_2\AppData\Roaming\.minecraft\libraries\org\lwjgl\lwjgl\lwjgl_util\2.9.0\lwjgl_util-2.9.0.jar for job 'Version & Libraries'... (try 0)
[15:31:08 INFO]: Attempting to download C:\Users\Sophia_2\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)
[15:31:08 INFO]: Attempting to download C:\Users\Sophia_2\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)
[15:31:08 INFO]: Attempting to download C:\Users\Sophia_2\AppData\Roaming\.minecraft\libraries\net\java\jutils\jutils\1.0.0\jutils-1.0.0.jar for job 'Version & Libraries'... (try 0)
[15:31:08 INFO]: Attempting to download C:\Users\Sophia_2\AppData\Roaming\.minecraft\libraries\net\java\jinput\jinput\2.0.5\jinput-2.0.5.jar for job 'Version & Libraries'... (try 0)
[15:31:08 INFO]: Attempting to download C:\Users\Sophia_2\AppData\Roaming\.minecraft\libraries\net\minecraft\launchwrapper\1.5\launchwrapper-1.5.jar for job 'Version & Libraries'... (try 0)
[15:31:08 INFO]: Attempting to download C:\Users\Sophia_2\AppData\Roaming\.minecraft\libraries\org\ow2\asm\asm-all\4.1\asm-all-4.1.jar for job 'Version & Libraries'... (try 0)
[15:31:08 INFO]: Attempting to download C:\Users\Sophia_2\AppData\Roaming\.minecraft\libraries\net\sf\jopt-simple\jopt-simple\4.5\jopt-simple-4.5.jar for job 'Version & Libraries'... (try 0)
[15:31:08 INFO]: Attempting to download C:\Users\Sophia_2\AppData\Roaming\.minecraft\libraries\org\lwjgl\lwjgl\lwjgl\2.9.0\lwjgl-2.9.0.jar for job 'Version & Libraries'... (try 0)
[15:31:08 INFO]: Attempting to download C:\Users\Sophia_2\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)
[15:31:08 INFO]: Attempting to download C:\Users\Sophia_2\AppData\Roaming\.minecraft\versions\1.4.7\1.4.7.jar for job 'Version & Libraries'... (try 0)
[15:31:09 INFO]: Download job 'Resources' skipped as there are no files to download
[15:31:09 INFO]: Job 'Resources' finished successfully (took 0:00:00.010)
[15:31:09 INFO]: Finished downloading C:\Users\Sophia_2\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
[15:31:09 INFO]: Finished downloading C:\Users\Sophia_2\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
[15:31:09 INFO]: Finished downloading C:\Users\Sophia_2\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
[15:31:09 INFO]: Finished downloading C:\Users\Sophia_2\AppData\Roaming\.minecraft\libraries\org\ow2\asm\asm-all\4.1\asm-all-4.1.jar for job 'Version & Libraries': Local file matches local checksum, using that
[15:31:09 INFO]: Finished downloading C:\Users\Sophia_2\AppData\Roaming\.minecraft\libraries\net\minecraft\launchwrapper\1.5\launchwrapper-1.5.jar for job 'Version & Libraries': Local file matches local checksum, using that
[15:31:09 INFO]: Finished downloading C:\Users\Sophia_2\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
[15:31:09 INFO]: Finished downloading C:\Users\Sophia_2\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
[15:31:09 INFO]: Finished downloading C:\Users\Sophia_2\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
[15:31:09 INFO]: Finished downloading C:\Users\Sophia_2\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
[15:31:09 INFO]: Finished downloading C:\Users\Sophia_2\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
[15:31:13 INFO]: Finished downloading C:\Users\Sophia_2\AppData\Roaming\.minecraft\versions\1.4.7\1.4.7.jar for job 'Version & Libraries': Downloaded successfully and etag matched
[15:31:13 INFO]: Job 'Version & Libraries' finished successfully (took 0:00:05.447)
[15:31:13 INFO]: Launching game
[15:31:13 INFO]: Looking for old natives & assets to clean up...
[15:31:13 INFO]: Unpacking natives to C:\Users\Sophia_2\AppData\Roaming\.minecraft\versions\1.4.7\1.4.7-natives-27678822904632
[15:31:13 INFO]: Reconstructing virtual assets folder at C:\Users\Sophia_2\AppData\Roaming\.minecraft\assets\virtual\legacy
[15:31:14 INFO]: Launching in C:\Users\Sophia_2\AppData\Roaming\.minecraft
[15:31:14 INFO]: Half command: C:\Program Files\Java\jre7\bin\javaw.exe -XX:HeapDumpPath=MojangTricksIntelDriversForPerformance_javaw.exe_minecraft.exe.heapdump -Xmx512M -Djava.library.path=C:\Users\Sophia_2\AppData\Roaming\.minecraft\versions\1.4.7\1.4.7-natives-27678822904632 -cp C:\Users\Sophia_2\AppData\Roaming\.minecraft\libraries\net\minecraft\launchwrapper\1.5\launchwrapper-1.5.jar;C:\Users\Sophia_2\AppData\Roaming\.minecraft\libraries\net\sf\jopt-simple\jopt-simple\4.5\jopt-simple-4.5.jar;C:\Users\Sophia_2\AppData\Roaming\.minecraft\libraries\org\ow2\asm\asm-all\4.1\asm-all-4.1.jar;C:\Users\Sophia_2\AppData\Roaming\.minecraft\libraries\net\java\jinput\jinput\2.0.5\jinput-2.0.5.jar;C:\Users\Sophia_2\AppData\Roaming\.minecraft\libraries\net\java\jutils\jutils\1.0.0\jutils-1.0.0.jar;C:\Users\Sophia_2\AppData\Roaming\.minecraft\libraries\org\lwjgl\lwjgl\lwjgl\2.9.0\lwjgl-2.9.0.jar;C:\Users\Sophia_2\AppData\Roaming\.minecraft\libraries\org\lwjgl\lwjgl\lwjgl_util\2.9.0\lwjgl_util-2.9.0.jar;C:\Users\Sophia_2\AppData\Roaming\.minecraft\versions\1.4.7\1.4.7.jar net.minecraft.launchwrapper.Launch
[15:31:16 INFO]: Client> Feb 18, 2014 3:31:15 PM net.minecraft.launchwrapper.LogWrapper log
[15:31:16 INFO]: Client> INFO: Using tweak class name net.minecraft.launchwrapper.VanillaTweaker
[15:31:17 INFO]: Client> Feb 18, 2014 3:31:17 PM net.minecraft.launchwrapper.LogWrapper log
[15:31:17 INFO]: Client> INFO: Launching wrapped minecraft
[15:31:18 INFO]: Client> 27 achievements
[15:31:18 INFO]: Client> 210 recipes
[15:31:18 INFO]: Client> Setting user: Sophiejessie, token:a49d439c2f064c84899422ceb7df3eca:80916c7d389541b19264a7a3179a44b8
[15:31:18 INFO]: Client> Client asked for parameter: server
[15:31:18 INFO]: Client> Turning of ImageIO disk-caching
[15:31:18 INFO]: Client> Loading current icons for window from: C:\Users\Sophia_2\AppData\Roaming\.minecraft\assets\virtual\legacy\icons\icon_16x16.png and C:\Users\Sophia_2\AppData\Roaming\.minecraft\assets\virtual\legacy\icons\icon_32x32.png
[15:31:18 INFO]: Client> LWJGL Version: 2.9.0
[15:31:19 INFO]: Client> Setting gameDir to: C:\Users\Sophia_2\AppData\Roaming\.minecraft
[15:31:19 INFO]: Client> java.lang.NullPointerException
[15:31:19 INFO]: Client> at java.io.Reader.<init>(Unknown Source)
[15:31:19 INFO]: Client> at java.io.InputStreamReader.<init>(Unknown Source)
[15:31:19 INFO]: Client> at bn.a(SourceFile:56)
[15:31:19 INFO]: Client> at bn.a(SourceFile:91)
[15:31:19 INFO]: Client> at net.minecraft.client.Minecraft.a(SourceFile:249)
[15:31:19 INFO]: Client> at asq.a(SourceFile:56)
[15:31:19 INFO]: Client> at net.minecraft.client.Minecraft.run(SourceFile:515)
[15:31:19 INFO]: Client> at java.lang.Thread.run(Unknown Source)
[15:31:19 INFO]: Client> Something is closing me!

Any advice would be deeply appreciated, as I miss 1.4.7 already.