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[10:35:57] [main/INFO]: Loading tweak class name net.minecraftforge.fml.common.launcher.FMLTweaker
[10:35:57] [main/INFO]: Using primary tweak class name net.minecraftforge.fml.common.launcher.FMLTweaker
[10:35:57] [main/INFO]: Calling tweak class net.minecraftforge.fml.common.launcher.FMLTweaker
[10:35:57] [main/INFO]: Forge Mod Loader version 14.23.5.2847 for Minecraft 1.12.2 loading
[10:35:57] [main/INFO]: Java is Java HotSpot(TM) 64-Bit Server VM, version 1.8.0_51, running on Windows 10:amd64:10.0, installed at C:\Users\Josh\Documents\Curse\Minecraft\Install\runtime\jre-x64
[10:35:57] [main/ERROR]: Contained Dep is not a jar file: 
[10:35:57] [main/ERROR]: Unable to launch
java.lang.RuntimeException: An error occurred trying to configure the Minecraft home at C:\Users\Josh\Documents\Curse\Minecraft\Instances\MyCraft 2.1 for Forge Mod Loader
    at net.minecraftforge.fml.relauncher.FMLLaunchHandler.setupHome(FMLLaunchHandler.java:111) ~[forge-1.12.2-14.23.5.2847.jar:?]
    at net.minecraftforge.fml.relauncher.FMLLaunchHandler.setupClient(FMLLaunchHandler.java:81) ~[forge-1.12.2-14.23.5.2847.jar:?]
    at net.minecraftforge.fml.relauncher.FMLLaunchHandler.configureForClientLaunch(FMLLaunchHandler.java:42) ~[forge-1.12.2-14.23.5.2847.jar:?]
    at net.minecraftforge.fml.common.launcher.FMLTweaker.injectIntoClassLoader(FMLTweaker.java:141) ~[forge-1.12.2-14.23.5.2847.jar:?]
    at net.minecraft.launchwrapper.Launch.launch(Launch.java:115) [launchwrapper-1.12.jar:?]
    at net.minecraft.launchwrapper.Launch.main(Launch.java:28) [launchwrapper-1.12.jar:?]
Caused by: java.lang.IllegalStateException: Invalid contained dep, Must be jar: 
    at net.minecraftforge.fml.relauncher.libraries.LibraryManager.extractPacked(LibraryManager.java:241) ~[forge-1.12.2-14.23.5.2847.jar:?]
    at net.minecraftforge.fml.relauncher.libraries.LibraryManager.extractPacked(LibraryManager.java:203) ~[forge-1.12.2-14.23.5.2847.jar:?]
    at net.minecraftforge.fml.relauncher.libraries.LibraryManager.cleanDirectory(LibraryManager.java:169) ~[forge-1.12.2-14.23.5.2847.jar:?]
    at net.minecraftforge.fml.relauncher.libraries.LibraryManager.setup(LibraryManager.java:97) ~[forge-1.12.2-14.23.5.2847.jar:?]
    at net.minecraftforge.fml.relauncher.FMLLaunchHandler.setupHome(FMLLaunchHandler.java:106) ~[forge-1.12.2-14.23.5.2847.jar:?]
    ... 5 more
[10:35:57] [main/INFO]: [java.lang.ThreadGroup:uncaughtException:1052]: net.minecraftforge.fml.relauncher.FMLSecurityManager$ExitTrappedException
[10:35:57] [main/INFO]: [java.lang.ThreadGroup:uncaughtException:1052]:     at net.minecraftforge.fml.relauncher.FMLSecurityManager.checkPermission(FMLSecurityManager.java:49)
[10:35:57] [main/INFO]: [java.lang.ThreadGroup:uncaughtException:1052]:     at java.lang.SecurityManager.checkExit(SecurityManager.java:761)
[10:35:57] [main/INFO]: [java.lang.ThreadGroup:uncaughtException:1052]:     at java.lang.Runtime.exit(Runtime.java:107)
[10:35:57] [main/INFO]: [java.lang.ThreadGroup:uncaughtException:1052]:     at java.lang.System.exit(System.java:971)
[10:35:57] [main/INFO]: [java.lang.ThreadGroup:uncaughtException:1052]:     at net.minecraft.launchwrapper.Launch.launch(Launch.java:138)
[10:35:57] [main/INFO]: [java.lang.ThreadGroup:uncaughtException:1052]:     at net.minecraft.launchwrapper.Launch.main(Launch.java:28)

 

 

 

When I click play in the MC launcher, it immediately gives a 'Game Crashed' screen, and when I checked the log, this is what I found. I've tried searching 'dep' but couldn't find anything, and I tried searching for this issue on this platform, but in that instance, the "Caused by: java.lang.IllegalStateException: Invalid contained dep, Must be jar: " was "Caused by: java.lang.IllegalStateException: Invalid contained dep, Missing from jar: mp3spi1.9.5.jar". If anyone can help me figure this out, I'd be more than grateful.

1.12 is no longer supported on this forum due to age.

Please update to a modern version to receive support here.

 

More information on supported versions can be found in the LTS link at the top of every page.

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