Gmail – Shortcut Key for Archive and Open Next Message

The e shortcut key in GMail archives the current conversation:

e    Archive     Archive your conversation from any view.

In my personal GMail account, hitting e opens he next conversation automatically. In my corp account, e archives the conversation and returns to the inbox.

Any idea how to set the e key to archive and open the next conversation?

Update: I do not have the Auto-advance option in my general settings:

Update #2: Auto-advance is enabled at the labs tab.