I've been creating some banners in Animate CC using GSAP and AdHelper as presented here. Using the GSAP_AdStarter.fla template. I managed to get the banner running on my local machine just fine when I test it, but as soon as I upload it to the testing server to view it, the banner will not load and I keep getting an error thrown: PSA ERROR: Exception while evaluating.preloader is undefined It's being called from js_defer.js. The banner does not load (only displays the default "Loading Advertisement...") and I cannot figure out why this happens. Has anyone else come across this error? And if so, is there a solution?