After I installed forge on my Minecraft 1.8, when I press play, it won't launch. Here's the error log:

Shiginima Launcher: SE V1.406 (through bootstrap 1) started on windows...

Current time is Dec 12, 2014 2:24:31 AM

System.getProperty('os.name') == 'Windows 8.1'

System.getProperty('os.version') == '6.3'

System.getProperty('os.arch') == 'x86'

System.getProperty('java.version') == '1.8.0_25'

System.getProperty('java.vendor') == 'Oracle Corporation'

System.getProperty('sun.arch.data.model') == '32'

Refreshing local version list...

Refreshing remote version list...

Refresh complete.

Loaded 4 profile(s); selected 'Default'

Getting syncinfo for selected version

Queueing library & version downloads

Download job 'Version & Libraries' started (16 threads, 5 files)

Attempting to download C:\Users\darri_000\AppData\Roaming\.minecraft\versions\1.8-FML7.10.98.1004-1.8\1.8-FML7.10.98.1004-1.8.jar for job 'Version & Libraries'... (try 0)

Attempting to download C:\Users\darri_000\AppData\Roaming\.minecraft\libraries\org\ow2\asm\asm-all\5.0.3\asm-all-5.0.3.jar for job 'Version & Libraries'... (try 0)

Attempting to download C:\Users\darri_000\AppData\Roaming\.minecraft\libraries\net\sf\jopt-simple\jopt-simple\4.5\jopt-simple-4.5.jar for job 'Version & Libraries'... (try 0)

Attempting to download C:\Users\darri_000\AppData\Roaming\.minecraft\libraries\net\minecraft\launchwrapper\1.11\launchwrapper-1.11.jar for job 'Version & Libraries'... (try 0)

Attempting to download C:\Users\darri_000\AppData\Roaming\.minecraft\libraries\lzma\lzma\0.0.1\lzma-0.0.1.jar for job 'Version & Libraries'... (try 0)

Delta time to compare resources: 4493 ms

Download job 'Resources' skipped as there are no files to download

Job 'Resources' finished successfully

Finished downloading C:\Users\darri_000\AppData\Roaming\.minecraft\versions\1.8-FML7.10.98.1004-1.8\1.8-FML7.10.98.1004-1.8.jar for job 'Version & Libraries': Couldn't connect to server (responded with 403) but have local file, assuming it's good

Finished downloading C:\Users\darri_000\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

Finished downloading C:\Users\darri_000\AppData\Roaming\.minecraft\libraries\org\ow2\asm\asm-all\5.0.3\asm-all-5.0.3.jar for job 'Version & Libraries': Local file matches local checksum, using that

Finished downloading C:\Users\darri_000\AppData\Roaming\.minecraft\libraries\lzma\lzma\0.0.1\lzma-0.0.1.jar for job 'Version & Libraries': Local file matches local checksum, using that

Finished downloading C:\Users\darri_000\AppData\Roaming\.minecraft\libraries\net\minecraft\launchwrapper\1.11\launchwrapper-1.11.jar for job 'Version & Libraries': Local file matches local checksum, using that

Job 'Version & Libraries' finished successfully

Launching game

Looking for old natives to clean up...

Unpacking natives to C:\Users\darri_000\AppData\Roaming\.minecraft\versions\1.8-FML7.10.98.1004-1.8\1.8-FML7.10.98.1004-1.8-natives-245317244479809

Launching in C:\Users\darri_000\AppData\Roaming\.minecraft

Half command: C:\Program Files (x86)\Java\jre1.8.0_25\bin\javaw.exe -XX:HeapDumpPath=MojangTricksIntelDriversForPerformance_javaw.exe_minecraft.exe.heapdump -Xmx512M -Djava.library.path=C:\Users\darri_000\AppData\Roaming\.minecraft\versions\1.8-FML7.10.98.1004-1.8\1.8-FML7.10.98.1004-1.8-natives-245317244479809 -cp C:\Users\darri_000\AppData\Roaming\.minecraft\libraries\cpw\mods\fml\1.8-7.10.98.1004-1.8\fml-1.8-7.10.98.1004-1.8.jar;C:\Users\darri_000\AppData\Roaming\.minecraft\libraries\net\minecraft\launchwrapper\1.11\launchwrapper-1.11.jar;C:\Users\darri_000\AppData\Roaming\.minecraft\libraries\org\ow2\asm\asm-all\5.0.3\asm-all-5.0.3.jar;C:\Users\darri_000\AppData\Roaming\.minecraft\libraries\com\typesafe\akka\akka-actor_2.11\2.3.3\akka-actor_2.11-2.3.3.jar;C:\Users\darri_000\AppData\Roaming\.minecraft\libraries\com\typesafe\config\1.2.1\config-1.2.1.jar;C:\Users\darri_000\AppData\Roaming\.minecraft\libraries\org\scala-lang\scala-actors-migration_2.11\1.1.0\scala-actors-migration_2.11-1.1.0.jar;C:\Users\darri_000\AppData\Roaming\.minecraft\libraries\org\scala-lang\scala-compiler\2.11.1\scala-compiler-2.11.1.jar;C:\Users\darri_000\AppData\Roaming\.minecraft\libraries\org\scala-lang\plugins\scala-continuations-library_2.11\1.0.2\scala-continuations-library_2.11-1.0.2.jar;C:\Users\darri_000\AppData\Roaming\.minecraft\libraries\org\scala-lang\plugins\scala-continuations-plugin_2.11.1\1.0.2\scala-continuations-plugin_2.11.1-1.0.2.jar;C:\Users\darri_000\AppData\Roaming\.minecraft\libraries\org\scala-lang\scala-library\2.11.1\scala-library-2.11.1.jar;C:\Users\darri_000\AppData\Roaming\.minecraft\libraries\org\scala-lang\scala-parser-combinators_2.11\1.0.1\scala-parser-combinators_2.11-1.0.1.jar;C:\Users\darri_000\AppData\Roaming\.minecraft\libraries\org\scala-lang\scala-reflect\2.11.1\scala-reflect-2.11.1.jar;C:\Users\darri_000\AppData\Roaming\.minecraft\libraries\org\scala-lang\scala-swing_2.11\1.0.1\scala-swing_2.11-1.0.1.jar;C:\Users\darri_000\AppData\Roaming\.minecraft\libraries\org\scala-lang\scala-xml_2.11\1.0.2\scala-xml_2.11-1.0.2.jar;C:\Users\darri_000\AppData\Roaming\.minecraft\libraries\lzma\lzma\0.0.1\lzma-0.0.1.jar;C:\Users\darri_000\AppData\Roaming\.minecraft\libraries\net\sf\jopt-simple\jopt-simple\4.5\jopt-simple-4.5.jar;C:\Users\darri_000\AppData\Roaming\.minecraft\versions\1.8-FML7.10.98.1004-1.8\1.8-FML7.10.98.1004-1.8.jar net.minecraft.launchwrapper.Launch

Running C:\Program Files (x86)\Java\jre1.8.0_25\bin\javaw.exe -XX:HeapDumpPath=MojangTricksIntelDriversForPerformance_javaw.exe_minecraft.exe.heapdump -Xmx512M -Djava.library.path=C:\Users\darri_000\AppData\Roaming\.minecraft\versions\1.8-FML7.10.98.1004-1.8\1.8-FML7.10.98.1004-1.8-natives-245317244479809 -cp C:\Users\darri_000\AppData\Roaming\.minecraft\libraries\cpw\mods\fml\1.8-7.10.98.1004-1.8\fml-1.8-7.10.98.1004-1.8.jar;C:\Users\darri_000\AppData\Roaming\.minecraft\libraries\net\minecraft\launchwrapper\1.11\launchwrapper-1.11.jar;C:\Users\darri_000\AppData\Roaming\.minecraft\libraries\org\ow2\asm\asm-all\5.0.3\asm-all-5.0.3.jar;C:\Users\darri_000\AppData\Roaming\.minecraft\libraries\com\typesafe\akka\akka-actor_2.11\2.3.3\akka-actor_2.11-2.3.3.jar;C:\Users\darri_000\AppData\Roaming\.minecraft\libraries\com\typesafe\config\1.2.1\config-1.2.1.jar;C:\Users\darri_000\AppData\Roaming\.minecraft\libraries\org\scala-lang\scala-actors-migration_2.11\1.1.0\scala-actors-migration_2.11-1.1.0.jar;C:\Users\darri_000\AppData\Roaming\.minecraft\libraries\org\scala-lang\scala-compiler\2.11.1\scala-compiler-2.11.1.jar;C:\Users\darri_000\AppData\Roaming\.minecraft\libraries\org\scala-lang\plugins\scala-continuations-library_2.11\1.0.2\scala-continuations-library_2.11-1.0.2.jar;C:\Users\darri_000\AppData\Roaming\.minecraft\libraries\org\scala-lang\plugins\scala-continuations-plugin_2.11.1\1.0.2\scala-continuations-plugin_2.11.1-1.0.2.jar;C:\Users\darri_000\AppData\Roaming\.minecraft\libraries\org\scala-lang\scala-library\2.11.1\scala-library-2.11.1.jar;C:\Users\darri_000\AppData\Roaming\.minecraft\libraries\org\scala-lang\scala-parser-combinators_2.11\1.0.1\scala-parser-combinators_2.11-1.0.1.jar;C:\Users\darri_000\AppData\Roaming\.minecraft\libraries\org\scala-lang\scala-reflect\2.11.1\scala-reflect-2.11.1.jar;C:\Users\darri_000\AppData\Roaming\.minecraft\libraries\org\scala-lang\scala-swing_2.11\1.0.1\scala-swing_2.11-1.0.1.jar;C:\Users\darri_000\AppData\Roaming\.minecraft\libraries\org\scala-lang\scala-xml_2.11\1.0.2\scala-xml_2.11-1.0.2.jar;C:\Users\darri_000\AppData\Roaming\.minecraft\libraries\lzma\lzma\0.0.1\lzma-0.0.1.jar;C:\Users\darri_000\AppData\Roaming\.minecraft\libraries\net\sf\jopt-simple\jopt-simple\4.5\jopt-simple-4.5.jar;C:\Users\darri_000\AppData\Roaming\.minecraft\versions\1.8-FML7.10.98.1004-1.8\1.8-FML7.10.98.1004-1.8.jar net.minecraft.launchwrapper.Launch --username Darren02 --version 1.8-FML7.10.98.1004-1.8 --gameDir C:\Users\darri_000\AppData\Roaming\.minecraft --assetsDir C:\Users\darri_000\AppData\Roaming\.minecraft\assets --assetIndex 1.8 --uuid 724fb040-c746-4a5a-9cb6-9ab6c9c824cd --accessToken - --userProperties {} --userType ${user_type} --tweakClass net.minecraftforge.fml.common.launcher.FMLTweaker

Client> Exception in thread "main" java.lang.NoClassDefFoundError: org/apache/logging/log4j/Level

Client> at net.minecraft.launchwrapper.Launch.launch(Launch.java:94)

Client> at net.minecraft.launchwrapper.Launch.main(Launch.java:28)

Client> Caused by: java.lang.ClassNotFoundException: org.apache.logging.log4j.Level

Client> at java.net.URLClassLoader$1.run(Unknown Source)

Client> at java.net.URLClassLoader$1.run(Unknown Source)

Client> at java.security.AccessController.doPrivileged(Native Method)

Client> at java.net.URLClassLoader.findClass(Unknown Source)

Client> at java.lang.ClassLoader.loadClass(Unknown Source)

Client> at sun.misc.Launcher$AppClassLoader.loadClass(Unknown Source)

Client> at java.lang.ClassLoader.loadClass(Unknown Source)

Client> ... 2 more

Game ended with bad state (exit code 1)

Ignoring visibility rule and showing launcher due to a game crash

Deleting C:\Users\darri_000\AppData\Roaming\.minecraft\versions\1.8-FML7.10.98.1004-1.8\1.8-FML7.10.98.1004-1.8-natives-245317244479809

 

use the Mojang launcher.

User was banned for using a cracked launcher.