I have spend all my night trying to install Forge on my client and I still get the same error... I tried everything and still have no results...

Also seems that forge files are missing from the servers(I mean amazonaws or files.minecraftforge.net, at least my minecraft didn't find them) so I really don't know what to do. The 1.7.10-Forge10.13.3.1403-1.7.10.jar is an improvisation from the original minecraft 1.7.10 jar file...(yes, that's my desperation )

If anyone may help me please...

 

This is what my console says:

 

[02:48:44 INFO]: Launcher 3.4 started on windows...[02:48:44 INFO]: Current time is May 30, 2015 2:48:44 AM[02:48:44 INFO]: System.getProperty('os.name') == 'Windows 7'[02:48:44 INFO]: System.getProperty('os.version') == '6.1'[02:48:44 INFO]: System.getProperty('os.arch') == 'amd64'[02:48:44 INFO]: System.getProperty('java.version') == '1.7.0_51'[02:48:44 INFO]: System.getProperty('java.vendor') == 'Oracle Corporation'[02:48:44 INFO]: System.getProperty('sun.arch.data.model') == '64'[02:48:44 INFO]: Attempting to load C:\Program Files\Java\jre7\lib\jfxrt.jar...[02:48:44 INFO]: JFX has been detected & successfully loaded[02:48:45 WARNING]: No internet connection![02:48:45 INFO]: Refreshing local version list...[02:48:46 INFO]: Refreshing remote version list...[02:48:46 SEVERE]: Unexpected exception refreshing version listjava.net.UnknownHostException: s3.amazonaws.comat java.net.AbstractPlainSocketImpl.connect(Unknown Source)at java.net.PlainSocketImpl.connect(Unknown Source)at java.net.SocksSocketImpl.connect(Unknown Source)at java.net.Socket.connect(Unknown Source)at sun.security.ssl.SSLSocketImpl.connect(Unknown Source)at sun.net.NetworkClient.doConnect(Unknown Source)at sun.net.www.http.HttpClient.openServer(Unknown Source)at sun.net.www.http.HttpClient.openServer(Unknown Source)at sun.net.www.protocol.https.HttpsClient.<init>(Unknown Source)at sun.net.www.protocol.https.HttpsClient.New(Unknown Source)at sun.net.www.protocol.https.AbstractDelegateHttpsURLConnection.getNewHttpClient(Unknown Source)at sun.net.www.protocol.http.HttpURLConnection.plainConnect(Unknown Source)at sun.net.www.protocol.https.AbstractDelegateHttpsURLConnection.connect(Unknown Source)at sun.net.www.protocol.http.HttpURLConnection.getInputStream(Unknown Source)at sun.net.www.protocol.https.HttpsURLConnectionImpl.getInputStream(Unknown Source)at com.mojang.launcher.a.a(Unknown Source)at net.minecraft.launcher.updater.RemoteVersionList.getContent(Unknown Source)at net.minecraft.launcher.updater.VersionList.refreshVersions(Unknown Source)at net.minecraft.launcher.updater.a.refreshVersions(Unknown Source)at net.minecraft.launcher.Launcher$2.run(Unknown Source)at java.util.concurrent.Executors$RunnableAdapter.call(Unknown Source)at java.util.concurrent.FutureTask.run(Unknown Source)at java.util.concurrent.ThreadPoolExecutor.runWorker(Unknown Source)at java.util.concurrent.ThreadPoolExecutor$Worker.run(Unknown Source)at java.lang.Thread.run(Unknown Source)[02:48:46 INFO]: Loaded 2 profile(s); selected 'forge'[02:50:56 INFO]: Getting syncinfo for selected version[02:50:56 INFO]: Queueing library & version downloads[02:50:56 INFO]: Download job 'Version & Libraries' started (16 threads, 7 files)[02:50:56 INFO]: Attempting to download C:\Users\Youkai\AppData\Roaming\.minecraft\libraries\lzma\lzma\0.0.1\lzma-0.0.1.jar for job 'Version & Libraries'... (try 0)[02:50:56 INFO]: Attempting to download C:\Users\Youkai\AppData\Roaming\.minecraft\libraries\net\minecraft\launchwrapper\1.11\launchwrapper-1.11.jar for job 'Version & Libraries'... (try 0)[02:50:56 INFO]: Attempting to download C:\Users\Youkai\AppData\Roaming\.minecraft\libraries\org\ow2\asm\asm-all\5.0.3\asm-all-5.0.3.jar for job 'Version & Libraries'... (try 0)[02:50:56 INFO]: Attempting to download C:\Users\Youkai\AppData\Roaming\.minecraft\libraries\net\sf\jopt-simple\jopt-simple\4.5\jopt-simple-4.5.jar for job 'Version & Libraries'... (try 0)[02:50:56 INFO]: Attempting to download C:\Users\Youkai\AppData\Roaming\.minecraft\libraries\com\google\guava\guava\17.0\guava-17.0.jar for job 'Version & Libraries'... (try 0)[02:50:56 INFO]: Attempting to download C:\Users\Youkai\AppData\Roaming\.minecraft\libraries\org\apache\commons\commons-lang3\3.3.2\commons-lang3-3.3.2.jar for job 'Version & Libraries'... (try 0)[02:50:56 INFO]: Attempting to download C:\Users\Youkai\AppData\Roaming\.minecraft\versions\1.7.10-Forge10.13.3.1403-1.7.10\1.7.10-Forge10.13.3.1403-1.7.10.jar for job 'Version & Libraries'... (try 0)[02:51:18 INFO]: Download job 'Resources' skipped as there are no files to download[02:51:18 INFO]: Job 'Resources' finished successfully (took 0:00:00.000)[02:51:18 INFO]: Finished downloading C:\Users\Youkai\AppData\Roaming\.minecraft\versions\1.7.10-Forge10.13.3.1403-1.7.10\1.7.10-Forge10.13.3.1403-1.7.10.jar for job 'Version & Libraries': Couldn't connect to server (responded with 403) but have local file, assuming it's good[02:51:18 INFO]: Finished downloading C:\Users\Youkai\AppData\Roaming\.minecraft\libraries\com\google\guava\guava\17.0\guava-17.0.jar for job 'Version & Libraries': Local file matches local checksum, using that[02:51:18 INFO]: Finished downloading C:\Users\Youkai\AppData\Roaming\.minecraft\libraries\org\apache\commons\commons-lang3\3.3.2\commons-lang3-3.3.2.jar for job 'Version & Libraries': Local file matches local checksum, using that[02:51:18 INFO]: Finished downloading C:\Users\Youkai\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[02:51:18 INFO]: Finished downloading C:\Users\Youkai\AppData\Roaming\.minecraft\libraries\net\minecraft\launchwrapper\1.11\launchwrapper-1.11.jar for job 'Version & Libraries': Local file matches local checksum, using that[02:51:18 INFO]: Finished downloading C:\Users\Youkai\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[02:51:18 INFO]: Finished downloading C:\Users\Youkai\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[02:51:18 INFO]: Job 'Version & Libraries' finished successfully (took 0:00:22.105)[02:51:18 INFO]: Launching game[02:51:18 INFO]: Unpacking natives to C:\Users\Youkai\AppData\Roaming\.minecraft\versions\1.7.10-Forge10.13.3.1403-1.7.10\1.7.10-Forge10.13.3.1403-1.7.10-natives-45329601013271[02:51:18 INFO]: Launching in C:\Users\Youkai\AppData\Roaming\.minecraft[02:51:18 INFO]: Half command: C:\Program Files\Java\jre7\bin\javaw.exe -XX:HeapDumpPath=MojangTricksIntelDriversForPerformance_javaw.exe_minecraft.exe.heapdump -Xmx1G -Djava.library.path=C:\Users\Youkai\AppData\Roaming\.minecraft\versions\1.7.10-Forge10.13.3.1403-1.7.10\1.7.10-Forge10.13.3.1403-1.7.10-natives-45329601013271 -cp C:\Users\Youkai\AppData\Roaming\.minecraft\libraries\net\minecraftforge\forge\1.7.10-10.13.3.1403-1.7.10\forge-1.7.10-10.13.3.1403-1.7.10.jar;C:\Users\Youkai\AppData\Roaming\.minecraft\libraries\net\minecraft\launchwrapper\1.11\launchwrapper-1.11.jar;C:\Users\Youkai\AppData\Roaming\.minecraft\libraries\org\ow2\asm\asm-all\5.0.3\asm-all-5.0.3.jar;C:\Users\Youkai\AppData\Roaming\.minecraft\libraries\com\typesafe\akka\akka-actor_2.11\2.3.3\akka-actor_2.11-2.3.3.jar;C:\Users\Youkai\AppData\Roaming\.minecraft\libraries\com\typesafe\config\1.2.1\config-1.2.1.jar;C:\Users\Youkai\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\Youkai\AppData\Roaming\.minecraft\libraries\org\scala-lang\scala-compiler\2.11.1\scala-compiler-2.11.1.jar;C:\Users\Youkai\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\Youkai\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\Youkai\AppData\Roaming\.minecraft\libraries\org\scala-lang\scala-library\2.11.1\scala-library-2.11.1.jar;C:\Users\Youkai\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\Youkai\AppData\Roaming\.minecraft\libraries\org\scala-lang\scala-reflect\2.11.1\scala-reflect-2.11.1.jar;C:\Users\Youkai\AppData\Roaming\.minecraft\libraries\org\scala-lang\scala-swing_2.11\1.0.1\scala-swing_2.11-1.0.1.jar;C:\Users\Youkai\AppData\Roaming\.minecraft\libraries\org\scala-lang\scala-xml_2.11\1.0.2\scala-xml_2.11-1.0.2.jar;C:\Users\Youkai\AppData\Roaming\.minecraft\libraries\lzma\lzma\0.0.1\lzma-0.0.1.jar;C:\Users\Youkai\AppData\Roaming\.minecraft\libraries\net\sf\jopt-simple\jopt-simple\4.5\jopt-simple-4.5.jar;C:\Users\Youkai\AppData\Roaming\.minecraft\libraries\com\google\guava\guava\17.0\guava-17.0.jar;C:\Users\Youkai\AppData\Roaming\.minecraft\libraries\org\apache\commons\commons-lang3\3.3.2\commons-lang3-3.3.2.jar;C:\Users\Youkai\AppData\Roaming\.minecraft\versions\1.7.10-Forge10.13.3.1403-1.7.10\1.7.10-Forge10.13.3.1403-1.7.10.jar net.minecraft.launchwrapper.Launch[02:51:18 INFO]: Looking for orphaned versions to clean up...[02:51:19 INFO]: Client> Exception in thread "main" java.lang.NoClassDefFoundError: org/apache/logging/log4j/Level[02:51:19 INFO]: Client> 	at net.minecraft.launchwrapper.Launch.launch(Launch.java:94)[02:51:19 INFO]: Client> 	at net.minecraft.launchwrapper.Launch.main(Launch.java:28)[02:51:19 INFO]: Client> Caused by: java.lang.ClassNotFoundException: org.apache.logging.log4j.Level[02:51:19 INFO]: Client> 	at java.net.URLClassLoader$1.run(Unknown Source)[02:51:19 INFO]: Client> 	at java.net.URLClassLoader$1.run(Unknown Source)[02:51:19 INFO]: Client> 	at java.security.AccessController.doPrivileged(Native Method)[02:51:19 INFO]: Client> 	at java.net.URLClassLoader.findClass(Unknown Source)[02:51:19 INFO]: Client> 	at java.lang.ClassLoader.loadClass(Unknown Source)[02:51:19 INFO]: Client> 	at sun.misc.Launcher$AppClassLoader.loadClass(Unknown Source)[02:51:19 INFO]: Client> 	at java.lang.ClassLoader.loadClass(Unknown Source)[02:51:19 INFO]: Client> 	... 2 more[02:51:19 SEVERE]: Game ended with bad state (exit code 1)[02:51:19 INFO]: Ignoring visibility rule and showing launcher due to a game crash[02:51:19 INFO]: Looking for old natives & assets to clean up...[02:51:19 INFO]: Deleting C:\Users\Youkai\AppData\Roaming\.minecraft\versions\1.7.10-Forge10.13.3.1403-1.7.10\1.7.10-Forge10.13.3.1403-1.7.10-natives-45329601013271

 

 

Also forgive me any english syntax error but I don't practice this language often...

Greetings.

Use the Forge installer. You DO NOT edit any jars or anything.

Also, from that log it looks like your internet connection isnt working.

I used the forge installer and it said me that everything is fine but when i launch minecraft the file located in versions/1.7.10-Forge10.13.3.1388-1.7.10/1.7.10-Forge10.13.3.1388-1.7.10.jar gives me this answer:

[12:38:42 WARNING]: Couldn't download https://s3.amazonaws.com/Minecraft.Download/versions/1.7.10-Forge10.13.3.1388-1.7.10/1.7.10-Forge10.13.3.1388-1.7.10.jar for job 'Version & Libraries'
java.lang.RuntimeException: Server responded with 403
at com.mojang.launcher.updater.download.c.download(Unknown Source)
at com.mojang.launcher.updater.download.DownloadJob.popAndDownload(Unknown Source)
at com.mojang.launcher.updater.download.DownloadJob.access$0(Unknown Source)
at com.mojang.launcher.updater.download.DownloadJob$1.run(Unknown Source)
at java.util.concurrent.Executors$RunnableAdapter.call(Unknown Source)
at java.util.concurrent.FutureTask.run(Unknown Source)
at java.util.concurrent.ThreadPoolExecutor.runWorker(Unknown Source)
at java.util.concurrent.ThreadPoolExecutor$Worker.run(Unknown Source)
at java.lang.Thread.run(Unknown Source)

It could be my connection... I don't know. This is the first time that forge give me this error and I have been using forge since minecraft 1.5.2.

What launcher are you using...

The launcher I am using is TeamExtreme Launcher 3.4... I haven't updated in a time.