New More Choices error in latest 6.1 Dev Snapshot

I updated our version of the Advanced Poll module this morning and found that the new version throws an error when we try to add new options to the poll.

***
An error occurred.
/?q=advpoll/js_more_choices
<br />
<b>Fatal error</b>: Call to undefined function node_form_submit_build_node() in <b>/home/######/public_html/sites/all/modules/advpoll/advpoll.module</b> on line <b>602</b><br />

***

I'm running D6.8, everything is up to date at the moment.

Because this was an error that I had not seen before updating the module this morning, I rolled back to the previous version and the error does not repeat.

Thanks!