I'm having some trouble

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wonton450

New Member
Jul 29, 2019
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I've been having trouble with Etho's custom FTB modpack, I'm selecting it in third party modpacks, but when I launch it, I've been getting this error:

[18:57:19] [main/ERROR]: Unable to launch
java.lang.ClassNotFoundException: cpw.mods.fml.common.launcher.FMLTweaker
at java.net.URLClassLoader$1.run(Unknown Source) ~[?:1.7.0_67]
at java.net.URLClassLoader$1.run(Unknown Source) ~[?:1.7.0_67]
at java.security.AccessController.doPrivileged(Native Method) ~[?:1.7.0_67]
at java.net.URLClassLoader.findClass(Unknown Source) ~[?:1.7.0_67]
at java.lang.ClassLoader.loadClass(Unknown Source) ~[?:1.7.0_67]
at sun.misc.Launcher$AppClassLoader.loadClass(Unknown Source) ~[?:1.7.0_67]
at java.lang.ClassLoader.loadClass(Unknown Source) ~[?:1.7.0_67]
at net.minecraft.launchwrapper.LaunchClassLoader.findClass(LaunchClassLoader.java:106) ~[launchwrapper-1.11.jar:?]
at java.lang.ClassLoader.loadClass(Unknown Source) ~[?:1.7.0_67]
at java.lang.ClassLoader.loadClass(Unknown Source) ~[?:1.7.0_67]
at java.lang.Class.forName0(Native Method) ~[?:1.7.0_67]
at java.lang.Class.forName(Unknown Source) ~[?:1.7.0_67]
at net.minecraft.launchwrapper.Launch.launch(Launch.java:98) [launchwrapper-1.11.jar:?]
at net.minecraft.launchwrapper.Launch.main(Launch.java:28) [launchwrapper-1.11.jar:?]

If anyone can help me with this, I'll gladly take help. I'm donating 2.75 gigs of ram to this, I'm running 64-bit java, and my FTB launcher will launch other thrid party modpacks just fine.
 
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