I\'m far from proficient in JS, so please forgive any obvious oversights. I\'ve been trying to use the API of the Supersized background slideshow plugin as part of a regular
I stumbled upon the same problem - and then realized that I had downloaded SuperSized version 3.1.3 (the latest from the legacy versions here), and totally overlooked the download link for the current version (3.2.4 as of today). However, the API calls are only supported from 3.2 upward - so maybe you are experiencing the same problem?
After downloading the latest version, the very same code you posted worked just fine on my end.