Has anyone seen this error before?

It only happens if I have a swap! on app-state in my main component's render as the last form before returning the computed view. And it only happens when the REPL attaches to the session (and then only once). The app runs fine without attaching a REPL and after that one error screen is dismissed.

Here's the actual swap! in question: (swap! app-state update-in [:data] dissoc :keyPressed)

Looks like there's a mistake in the final listing here: https://github.com/omcljs/om/wiki/Queries-With-Unions#putting-it-all-together

In the Photo, (dom/p nil "Caption: ") should (I assume) be (dom/p nil (str "Caption: " caption))

Is that something I should file an issue for or…what? (I'd edit the page, but it says not to.)

(Issue filed here: https://github.com/omcljs/om/issues/509)