I tried version 36.2.23 and 36.2.20 both with the same errors.
crash on startup, no menu.
[03:27:02] [main/INFO] [STDERR/]: [org.multimc.onesix.OneSixLauncher:launchWithMainClass:213]: Failed to start Minecraft:
[03:27:02] [main/INFO] [STDERR/]: [org.multimc.onesix.OneSixLauncher:launch:245]: java.lang.reflect.InvocationTargetException
[03:27:02] [main/INFO] [STDERR/]: [org.multimc.onesix.OneSixLauncher:launch:245]: at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
[03:27:02] [main/INFO] [STDERR/]: [org.multimc.onesix.OneSixLauncher:launch:245]: at sun.reflect.NativeMethodAccessorImpl.invoke(Unknown Source)
[03:27:02] [main/INFO] [STDERR/]: [org.multimc.onesix.OneSixLauncher:launch:245]: at sun.reflect.DelegatingMethodAccessorImpl.invoke(Unknown Source)
[03:27:02] [main/INFO] [STDERR/]: [org.multimc.onesix.OneSixLauncher:launch:245]: at java.lang.reflect.Method.invoke(Unknown Source)
[03:27:02] [main/INFO] [STDERR/]: [org.multimc.onesix.OneSixLauncher:launch:245]: at org.multimc.onesix.OneSixLauncher.launchWithMainClass(OneSixLauncher.java:210)
[03:27:02] [main/INFO] [STDERR/]: [org.multimc.onesix.OneSixLauncher:launch:245]: at org.multimc.onesix.OneSixLauncher.launch(OneSixLauncher.java:245)
[03:27:02] [main/INFO] [STDERR/]: [org.multimc.onesix.OneSixLauncher:launch:245]: at org.multimc.EntryPoint.listen(EntryPoint.java:143)
[03:27:02] [main/INFO] [STDERR/]: [org.multimc.onesix.OneSixLauncher:launch:245]: at org.multimc.EntryPoint.main(EntryPoint.java:34)
[03:27:02] [main/INFO] [STDERR/]: [org.multimc.onesix.OneSixLauncher:launchWithMainClass:214]: Caused by: java.lang.reflect.InvocationTargetException
[03:27:02] [main/INFO] [STDERR/]: [org.multimc.onesix.OneSixLauncher:launchWithMainClass:214]: at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
[03:27:02] [main/INFO] [STDERR/]: [org.multimc.onesix.OneSixLauncher:launchWithMainClass:214]: at sun.reflect.NativeMethodAccessorImpl.invoke(Unknown Source)
[03:27:02] [main/INFO] [STDERR/]: [org.multimc.onesix.OneSixLauncher:launchWithMainClass:214]: at sun.reflect.DelegatingMethodAccessorImpl.invoke(Unknown Source)
[03:27:02] [main/INFO] [STDERR/]: [org.multimc.onesix.OneSixLauncher:launchWithMainClass:214]: at java.lang.reflect.Method.invoke(Unknown Source)
[03:27:02] [main/INFO] [STDERR/]: [org.multimc.onesix.OneSixLauncher:launchWithMainClass:214]: at io.github.zekerzhayard.forgewrapper.installer.Main.main(Main.java:57)
[03:27:02] [main/INFO] [STDERR/]: [org.multimc.onesix.OneSixLauncher:launchWithMainClass:214]: ... 8 more
[03:27:02] [main/INFO] [STDERR/]: [java.lang.Throwable:printStackTrace:-1]: Caused by: java.lang.RuntimeException: java.lang.reflect.InvocationTargetException
[03:27:02] [main/INFO] [STDERR/]: [java.lang.Throwable:printStackTrace:-1]: at cpw.mods.modlauncher.LaunchServiceHandlerDecorator.launch(LaunchServiceHandlerDecorator.java:39)
[03:27:02] [main/INFO] [STDERR/]: [java.lang.Throwable:printStackTrace:-1]: at cpw.mods.modlauncher.LaunchServiceHandler.launch(LaunchServiceHandler.java:54)
[03:27:02] [main/INFO] [STDERR/]: [java.lang.Throwable:printStackTrace:-1]: at cpw.mods.modlauncher.LaunchServiceHandler.launch(LaunchServiceHandler.java:72)
[03:27:02] [main/INFO] [STDERR/]: [java.lang.Throwable:printStackTrace:-1]: at cpw.mods.modlauncher.Launcher.run(Launcher.java:82)
[03:27:02] [main/INFO] [STDERR/]: [java.lang.Throwable:printStackTrace:-1]: at cpw.mods.modlauncher.Launcher.main(Launcher.java:66)
[03:27:02] [main/INFO] [STDERR/]: [java.lang.Throwable:printStackTrace:-1]: ... 13 more
[03:27:02] [main/INFO] [STDERR/]: [java.lang.Throwable:printStackTrace:-1]: Caused by: java.lang.reflect.InvocationTargetException
[03:27:02] [main/INFO] [STDERR/]: [java.lang.Throwable:printStackTrace:-1]: at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
[03:27:02] [main/INFO] [STDERR/]: [java.lang.Throwable:printStackTrace:-1]: at sun.reflect.NativeMethodAccessorImpl.invoke(Unknown Source)
[03:27:02] [main/INFO] [STDERR/]: [java.lang.Throwable:printStackTrace:-1]: at sun.reflect.DelegatingMethodAccessorImpl.invoke(Unknown Source)
[03:27:02] [main/INFO] [STDERR/]: [java.lang.Throwable:printStackTrace:-1]: at java.lang.reflect.Method.invoke(Unknown Source)
[03:27:02] [main/INFO] [STDERR/]: [java.lang.Throwable:printStackTrace:-1]: at net.minecraftforge.fml.loading.FMLClientLaunchProvider.lambda$launchService$0(FMLClientLaunchProvider.java:51)
[03:27:02] [main/INFO] [STDERR/]: [java.lang.Throwable:printStackTrace:-1]: at cpw.mods.modlauncher.LaunchServiceHandlerDecorator.launch(LaunchServiceHandlerDecorator.java:37)
[03:27:02] [main/INFO] [STDERR/]: [java.lang.Throwable:printStackTrace:-1]: ... 17 more
[03:27:02] [main/INFO] [STDERR/]: [java.lang.Throwable:printEnclosedStackTrace:-1]: Caused by: java.lang.NoSuchMethodError: sun.security.util.ManifestEntryVerifier.<init>(Ljava/util/jar/Manifest;)V
[03:27:02] [main/INFO] [STDERR/]: [java.lang.Throwable:printEnclosedStackTrace:-1]: at cpw.mods.modlauncher.SecureJarHandler.createCodeSource(SecureJarHandler.java:66)
[03:27:02] [main/INFO] [STDERR/]: [java.lang.Throwable:printEnclosedStackTrace:-1]: at cpw.mods.modlauncher.TransformingClassLoader$DelegatedClassLoader.findClass(TransformingClassLoader.java:275)
[03:27:02] [main/INFO] [STDERR/]: [java.lang.Throwable:printEnclosedStackTrace:-1]: at cpw.mods.modlauncher.TransformingClassLoader.loadClass(TransformingClassLoader.java:136)
[03:27:02] [main/INFO] [STDERR/]: [java.lang.Throwable:printEnclosedStackTrace:-1]: at cpw.mods.modlauncher.TransformingClassLoader.loadClass(TransformingClassLoader.java:98)
[03:27:02] [main/INFO] [STDERR/]: [java.lang.Throwable:printEnclosedStackTrace:-1]: at java.lang.ClassLoader.loadClass(Unknown Source)
[03:27:02] [main/INFO] [STDERR/]: [java.lang.Throwable:printEnclosedStackTrace:-1]: at net.minecraft.crash.CrashReport.func_71504_g(CrashReport.java:72)
[03:27:02] [main/INFO] [STDERR/]: [java.lang.Throwable:printEnclosedStackTrace:-1]: at net.minecraft.crash.CrashReport.<init>(CrashReport.java:38)
[03:27:02] [main/INFO] [STDERR/]: [java.lang.Throwable:printEnclosedStackTrace:-1]: at net.minecraft.crash.CrashReport.func_230188_h_(CrashReport.java:248)
[03:27:02] [main/INFO] [STDERR/]: [java.lang.Throwable:printEnclosedStackTrace:-1]: at net.minecraft.client.main.Main.main(Main.java:122)
[03:27:02] [main/INFO] [STDERR/]: [java.lang.Throwable:printEnclosedStackTrace:-1]: ... 23 more
[03:27:02] [main/INFO] [STDOUT/]: [org.multimc.EntryPoint:main:37]: Exiting with -1