Did you check the javascript errors/warning?
Probably your template or other plugins are using google maps v2 and my plugin use google maps v3
Warning: you have included the Google Maps API multiple times on this page. This may cause unexpected errors. main.js:46
Uncaught InvalidValueError: setMap: not an instance of Map, and not an instance of StreetViewPanorama main.js:28
event.returnValue is deprecated. Please use the standard event.preventDefault() instead.
Uncaught InvalidValueError: setMap: not an instance of Map, and not an instance of StreetViewPanorama main.js:28