Pop Up! plugin stopped showing popups in Chrome only

I've been using this plugin for awhile, but within the last week or so, it has stopped serving popups to Chrome users (tests fine with IE and mobile Safari). Does this have anything to do with the recent Chrome update (which I lagged around installing until recently)?

WP 3.9.1, Popover plugin 4.5.3, Chrome Browser 35.0.1916.114 m