Jetpack Triggers Error in sermons.php (line 560)

Receiving the following error in 2.16.1 (current revision with most recent fixes).

From the stack trace it appears to be triggered by a JETPACK Sync. I haven’t traced through very much, but it’s triggering the automatic email notification by my provider saying something’s wrong… and the log file has more than a few entries like the following.
====
An error of type E_ERROR was caused in line 560 of the file [REDACTED]/public_html/wp-content/plugins/sermon-manager-for-wordpress/sermons.php. Error message: Uncaught Error: Call to undefined function sm_get_screen_ids() in [REDACTED]/public_html/wp-content/plugins/sermon-manager-for-wordpress/sermons.php:560

Stack trace:

#0 [REDACTED]/public_html/wp-includes/class-wp-hook.php(287): SermonManager->{closure}(Object(WP_Screen))

#1 [REDACTED]/public_html/wp-includes/class-wp-hook.php(311): WP_Hook->apply_filters(”, Array)

#2 [REDACTED]/public_html/wp-includes/plugin.php(478): WP_Hook->do_action(Array)

#3 [REDACTED]/public_html/wp-admin/includes/class-wp-screen.php(421): do_action(‘current_screen’, Object(WP_Screen))

#4 [REDACTED]/public_html/wp-admin/includes/screen.php(240): WP_Screen->set_current_screen()

#5 [REDACTED]/public_html/wp-content/plugins/jetpack/vendor/automattic/jetpack-sync/src/class-sender.php(370): set_current_screen(‘sync’)

#6 [REDACTED]/public_html/wp-content/plugins/jetpack/vendor/automattic/jetpack-sync/src/class-sender.php(463): Automattic\Jetpack\Sync\Sender->get_items_to_send(Object(Automattic\Jetpack\
=====

Any hints or help would be appreciated.

THanks!