I'm getting a segfault in the renderer process on both win64 and lnx64.  I've not yet isolated a minimal test case but the interrupt always occurs at _NewFromUtf8_.

> Program received signal SIGSEGV, Segmentation fault.
> 0x00007f0f7cacba08 in v8::String::NewFromUtf8(v8::Isolate_, char const_, v8::String::NewStringType, int) ()

This is on the latest release 1.2.2.

atom/renderer/atom_renderer_client.cc
content::RenderFrame* render_frame) {
  
  node::Environment* env = node_bindings_->uv_env();
  if (env) {
    v8::HandleScope handle_scope(env->isolate());
    mate::EmitEvent(env->isolate(), env->process_object(), "document-end");
  }
}
blink::WebSpeechSynthesizer* AtomRendererClient::OverrideSpeechSynthesizer(
    blink::WebSpeechSynthesizerClient* client) {
  return new TtsDispatcher(client);
}
bool AtomRendererClient::OverrideCreatePlugin(
    content::RenderFrame* render_frame,
    blink::WebLocalFrame* frame,
    const blink::WebPluginParams& params,
    blink::WebPlugin** plugin) {
  base::CommandLine* command_line = base::CommandLine::ForCurrentProcess();
  if (params.mimeType.utf8() == content::kBrowserPluginMimeType ||
      command_line->HasSwitch(switches::kEnablePlugins))
    return false;
  *plugin = nullptr;
  return true;
}
void AtomRendererClient::DidCreateScriptContext(