When click back after calling changepage: "TypeError: Cannot read property 'transition' of undefined"

When click back after calling changepage: "TypeError: Cannot read property 'transition' of undefined"

Here is what is happening:
(1) I have a link on my main page, with a click event.
(2) The click event calls 

$.mobile.changepage('/page/path', 'slide', true, true);

(3) I observe the pageshow event for the new page, and do some stuff, placing content in divs.
(4) When I click the back button the URL updates, but the page is not transitioned. The error: "TypeError: Cannot read property 'transition' of undefined" is thrown.

Am I doing something obviously wrong or is this a bug?