Every time I try to use Forge 1.8 it crashes, and I have no idea how to read crash logs. I have only 1 mod in there so it is most likely the problem, but I don't know exactly what is wrong.

 

Crash Log: 

20:54:02	launcher	Preparing to launch minecraft client for 1.8-forge1.8-11.14.4.1577
20:54:03	launcher	Couldn't get hash for com/typesafe/akka/akka-actor_2.11/2.3.3/akka-actor_2.11-2.3.3.jar from http://files.minecraftforge.net/maven/com/typesafe/akka/akka-actor_2.11/2.3.3/akka-actor_2.11-2.3.3.jar.sha1: HTTP 404: Not Found
20:54:03	launcher	Couldn't get hash for org/scala-lang/scala-actors-migration_2.11/1.1.0/scala-actors-migration_2.11-1.1.0.jar from http://files.minecraftforge.net/maven/org/scala-lang/scala-actors-migration_2.11/1.1.0/scala-actors-migration_2.11-1.1.0.jar.sha1: HTTP 404: Not Found
20:54:03	launcher	Couldn't get hash for org/scala-lang/scala-compiler/2.11.1/scala-compiler-2.11.1.jar from http://files.minecraftforge.net/maven/org/scala-lang/scala-compiler/2.11.1/scala-compiler-2.11.1.jar.sha1: HTTP 404: Not Found
20:54:03	launcher	Couldn't get hash for org/scala-lang/plugins/scala-continuations-library_2.11/1.0.2/scala-continuations-library_2.11-1.0.2.jar from http://files.minecraftforge.net/maven/org/scala-lang/plugins/scala-continuations-library_2.11/1.0.2/scala-continuations-library_2.11-1.0.2.jar.sha1: HTTP 404: Not Found
20:54:03	launcher	Couldn't get hash for org/scala-lang/plugins/scala-continuations-plugin_2.11.1/1.0.2/scala-continuations-plugin_2.11.1-1.0.2.jar from http://files.minecraftforge.net/maven/org/scala-lang/plugins/scala-continuations-plugin_2.11.1/1.0.2/scala-continuations-plugin_2.11.1-1.0.2.jar.sha1: HTTP 404: Not Found
20:54:03	launcher	Couldn't get hash for org/scala-lang/scala-library/2.11.1/scala-library-2.11.1.jar from http://files.minecraftforge.net/maven/org/scala-lang/scala-library/2.11.1/scala-library-2.11.1.jar.sha1: HTTP 404: Not Found
20:54:03	launcher	Couldn't get hash for net/minecraftforge/forge/1.8-11.14.4.1577/forge-1.8-11.14.4.1577.jar from http://files.minecraftforge.net/maven/net/minecraftforge/forge/1.8-11.14.4.1577/forge-1.8-11.14.4.1577.jar.sha1: HTTP 404: Not Found
20:54:03	launcher	Have local file C:/Users\Shelly\AppData\Roaming\.minecraft\libraries\net/minecraftforge/forge/1.8-11.14.4.1577/forge-1.8-11.14.4.1577.jar but don't know what size or hash it should be. Have to assume it's good.
20:54:03	launcher	Couldn't get hash for org/scala-lang/scala-reflect/2.11.1/scala-reflect-2.11.1.jar from http://files.minecraftforge.net/maven/org/scala-lang/scala-reflect/2.11.1/scala-reflect-2.11.1.jar.sha1: HTTP 404: Not Found
20:54:03	launcher	Couldn't get hash for com/typesafe/config/1.2.1/config-1.2.1.jar from http://files.minecraftforge.net/maven/com/typesafe/config/1.2.1/config-1.2.1.jar.sha1: HTTP 404: Not Found
20:54:04	launcher	Have local file C:/Users\Shelly\AppData\Roaming\.minecraft\libraries\com/typesafe/akka/akka-actor_2.11/2.3.3/akka-actor_2.11-2.3.3.jar but don't know what size or hash it should be. Have to assume it's good.
20:54:04	launcher	Have local file C:/Users\Shelly\AppData\Roaming\.minecraft\libraries\com/typesafe/config/1.2.1/config-1.2.1.jar but don't know what size or hash it should be. Have to assume it's good.
20:54:04	launcher	Have local file C:/Users\Shelly\AppData\Roaming\.minecraft\libraries\org/scala-lang/scala-actors-migration_2.11/1.1.0/scala-actors-migration_2.11-1.1.0.jar but don't know what size or hash it should be. Have to assume it's good.
20:54:04	launcher	Have local file C:/Users\Shelly\AppData\Roaming\.minecraft\libraries\org/scala-lang/scala-compiler/2.11.1/scala-compiler-2.11.1.jar but don't know what size or hash it should be. Have to assume it's good.
20:54:04	launcher	Have local file C:/Users\Shelly\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 but don't know what size or hash it should be. Have to assume it's good.
20:54:04	launcher	Have local file C:/Users\Shelly\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 but don't know what size or hash it should be. Have to assume it's good.
20:54:04	launcher	Have local file C:/Users\Shelly\AppData\Roaming\.minecraft\libraries\org/scala-lang/scala-library/2.11.1/scala-library-2.11.1.jar but don't know what size or hash it should be. Have to assume it's good.
20:54:04	launcher	Couldn't get hash for org/scala-lang/scala-swing_2.11/1.0.1/scala-swing_2.11-1.0.1.jar from http://files.minecraftforge.net/maven/org/scala-lang/scala-swing_2.11/1.0.1/scala-swing_2.11-1.0.1.jar.sha1: HTTP 404: Not Found
20:54:04	launcher	Couldn't get hash for 1.8 jar from https://s3.amazonaws.com/Minecraft.Download/versions/1.8/1.8.jar.sha1: HTTP 403: Forbidden
20:54:04	launcher	Have local file C:/Users\Shelly\AppData\Roaming\.minecraft\versions\1.8/1.8.jar but don't know what size or hash it should be. Have to assume it's good.
20:54:04	launcher	Have local file C:/Users\Shelly\AppData\Roaming\.minecraft\libraries\org/scala-lang/scala-reflect/2.11.1/scala-reflect-2.11.1.jar but don't know what size or hash it should be. Have to assume it's good.
20:54:04	launcher	Have local file C:/Users\Shelly\AppData\Roaming\.minecraft\libraries\org/scala-lang/scala-swing_2.11/1.0.1/scala-swing_2.11-1.0.1.jar but don't know what size or hash it should be. Have to assume it's good.
20:54:04	launcher	Couldn't get hash for org/scala-lang/scala-xml_2.11/1.0.2/scala-xml_2.11-1.0.2.jar from http://files.minecraftforge.net/maven/org/scala-lang/scala-xml_2.11/1.0.2/scala-xml_2.11-1.0.2.jar.sha1: HTTP 404: Not Found
20:54:04	launcher	Have local file C:/Users\Shelly\AppData\Roaming\.minecraft\libraries\org/scala-lang/scala-xml_2.11/1.0.2/scala-xml_2.11-1.0.2.jar but don't know what size or hash it should be. Have to assume it's good.
20:54:04	launcher	Couldn't get hash for org/scala-lang/scala-parser-combinators_2.11/1.0.1/scala-parser-combinators_2.11-1.0.1.jar from http://files.minecraftforge.net/maven/org/scala-lang/scala-parser-combinators_2.11/1.0.1/scala-parser-combinators_2.11-1.0.1.jar.sha1: HTTP 404: Not Found
20:54:04	launcher	Have local file C:/Users\Shelly\AppData\Roaming\.minecraft\libraries\org/scala-lang/scala-parser-combinators_2.11/1.0.1/scala-parser-combinators_2.11-1.0.1.jar but don't know what size or hash it should be. Have to assume it's good.
20:54:04	launcher	Checking installations.
20:54:04	launcher	Minecraft client 1.8-forge1.8-11.14.4.1577 requires 18446744073707708896 bytes to download.
20:54:04	launcher	Starting!
20:54:05	launcher	Using default game log configuration client-1.7.xml (outputs XML)
20:54:06	LaunchWrapper	Loading tweak class name net.minecraftforge.fml.common.launcher.FMLTweaker

Please post the latest client log file from %USERPROFILE%\AppData\Roaming\.minecraft\logs (provided you have not changed the minecraft directory for your forge installation). Please use the spolier tags (the button of the little eyeball) so that it does not take up page upon page.

 

*edit: I've also seen it said, if you really need to use a 1.8 version, to use 1.8.9 as it is more stable than 1.8.

Edited June 1, 20178 yr by Ugdhar
version note

On 6/1/2017 at 5:34 AM, Ugdhar said:

Please post the latest client log file from %USERPROFILE%\AppData\Roaming\.minecraft\logs (provided you have not changed the minecraft directory for your forge installation). Please use the spolier tags (the button of the little eyeball) so that it does not take up page upon page.

 

*edit: I've also seen it said, if you really need to use a 1.8 version, to use 1.8.9 as it is more stable than 1.8.

I figured out the problem on my own. I apparently am just blind and didn't realize that when I had recently installed a modpack all of the mods were in there, and it was for a different version. Thanks for letting me know about the spoilers though