I've just recently installed the IdeaVim plugin into RubyMine 3.2.4 and I haven't been able to make it work. The plugin is enabled, I go to File | Settings | Keymap and choose Vim, but half of the actions are blue and thus not operating. Here's a screenshot:
Additionally, it didn't work out of the box right after installing the plugin. RubyMine was rebooted but nothing happened afterwards.
I attached a screenshot. Let me know if you need more details to debug this.