Open 1.7.0: Infinity Evolved refuses to start

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2.4.2 [2.5.0]

What is the bug:
when i try to start up infinity evolve through the curse launcher this message appears in the minecraft loading screen.

[19:17:26] [main/INFO]: Loading tweak class name cpw.mods.fml.common.launcher.FMLTweaker
[19:17:26] [main/ERROR]: Unable to launch
java.lang.ClassNotFoundException: cpw.mods.fml.common.launcher.FMLTweaker
at$ ~[?:1.8.0_25]
at$ ~[?:1.8.0_25]
at Method) ~[?:1.8.0_25]
at ~[?:1.8.0_25]
at java.lang.ClassLoader.loadClass( ~[?:1.8.0_25]
at sun.misc.Launcher$AppClassLoader.loadClass( ~[?:1.8.0_25]
at java.lang.ClassLoader.loadClass( ~[?:1.8.0_25]
at net.minecraft.launchwrapper.LaunchClassLoader.findClass( ~[launchwrapper-1.12.jar:?]
at java.lang.ClassLoader.loadClass( ~[?:1.8.0_25]
at java.lang.ClassLoader.loadClass( ~[?:1.8.0_25]
at java.lang.Class.forName0(Native Method) ~[?:1.8.0_25]
at java.lang.Class.forName( ~[?:1.8.0_25]
at net.minecraft.launchwrapper.Launch.launch( [launchwrapper-1.12.jar:?]
at net.minecraft.launchwrapper.Launch.main( [launchwrapper-1.12.jar:?]
Java HotSpot(TM) 64-Bit Server VM warning: ignoring option PermSize=256m; support was removed in 8.0

i have no idea what to do and have looked all over the forums for a fix and cannot seem to find one... pls help.

Mod & Version:
infinity evolved version 2.5.0 log:

Can it be repeated:

Known Fix:
Last edited: