Every Modpack Crashing on Start

[Cheesinator45]

Title Every Modpack Crashing on Start

Launcher Type

Modpack FTB Infinity Evolved

Modpack version 2.6.0

Have you modified the pack? No

Link to log file

Details of the issue I am using Curse Voice on the Mac OS X El Capitan.
When I hit play after downloading the modpack, the launcher opens. However, after clicking play on the Minecraft launcher, the game immediately crashes, with this report:

Crash Report:
Java HotSpot(TM) 64-Bit Server VM warning: Using incremental CMS is deprecated and will likely be removed in a future release
[18:55:33] [main/INFO]: Loading tweak class name cpw.mods.fml.common.launcher.FMLTweaker
[18:55:33] [main/ERROR]: Unable to launch
java.lang.ClassNotFoundException: cpw.mods.fml.common.launcher.FMLTweaker
at java.net.URLClassLoader.findClass(URLClassLoader.java:381) ~[?:1.8.0_101]
at java.lang.ClassLoader.loadClass(ClassLoader.java:424) ~[?:1.8.0_101]
at sun.misc.Launcher$AppClassLoader.loadClass(Launcher.java:331) ~[?:1.8.0_101]
at java.lang.ClassLoader.loadClass(ClassLoader.java:357) ~[?:1.8.0_101]
at net.minecraft.launchwrapper.LaunchClassLoader.findClass(LaunchClassLoader.java:106) ~[launchwrapper-1.12.jar:?]
at java.lang.ClassLoader.loadClass(ClassLoader.java:424) ~[?:1.8.0_101]
at java.lang.ClassLoader.loadClass(ClassLoader.java:357) ~[?:1.8.0_101]
at java.lang.Class.forName0(Native Method) ~[?:1.8.0_101]
at java.lang.Class.forName(Class.java:348) ~[?:1.8.0_101]
at net.minecraft.launchwrapper.Launch.launch(Launch.java:98) [launchwrapper-1.12.jar:?]
at net.minecraft.launchwrapper.Launch.main(Launch.java:28) [launchwrapper-1.12.jar:?]

 

[mc.crab]

https://gist.github.com/jikuja/7e0828dca7d264e850be306b58893127

 

[Cheesinator45]

Thank you so much! It works perfectly!