Upgrade to WebStorm 2016.3 No Longer Starts Up

I upgraded to WebStorm 2106.3 and now the application no longer starts up. I've tried downloading a fresh install and downloading a previous version with the same result.

Here are the error logs:

Internal error. Please report to http://jb.gg/ide/critical-startup-errors

com.intellij.ide.plugins.PluginManager$StartupAbortedException: java.lang.reflect.InvocationTargetException
at com.intellij.ide.plugins.PluginManager.a(PluginManager.java:94)
at java.lang.Thread.run(Thread.java:745)
Caused by: java.lang.reflect.InvocationTargetException
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
at java.lang.reflect.Method.invoke(Method.java:498)
at com.intellij.ide.plugins.PluginManager.a(PluginManager.java:91)
... 1 more
Caused by: java.lang.BootstrapMethodError: java.lang.NoClassDefFoundError: io/netty/channel/ChannelHandler
at com.intellij.idea.SocketLock.c(SocketLock.java:152)
at com.intellij.idea.SocketLock.a(SocketLock.java:181)
at com.intellij.idea.SocketLock.lock(SocketLock.java:128)
at com.intellij.idea.StartupUtil.a(StartupUtil.java:293)
at com.intellij.idea.StartupUtil.prepareAndStart(StartupUtil.java:122)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
at java.lang.reflect.Method.invoke(Method.java:498)
at com.intellij.idea.MainImpl.start(MainImpl.java:46)
... 6 more
Caused by: java.lang.NoClassDefFoundError: io/netty/channel/ChannelHandler
... 16 more
Caused by: java.lang.ClassNotFoundException: io.netty.channel.ChannelHandler
at com.intellij.util.lang.UrlClassLoader.findClass(UrlClassLoader.java:220)
at java.lang.ClassLoader.loadClass(ClassLoader.java:424)
at java.lang.ClassLoader.loadClass(ClassLoader.java:357)
... 16 more