happy new year to you as well!
I just looked at your page and I can't find any stage div in the source. How do you include the animation? I'm not sure what you are planning will work with the plugin as you are trying to overlay the animation on other content. It "seems" to work because edge - for some reason - ankers the animation in the body if it can't find the correct stage div, but that will result in strange behavior. The only thing I could think of right now is to use the "header method" as described in the Edge Suite tutorial to place the animation. Then you could try to overwrite the stage div css with !important and set it up as an overlay.
I would highly recommend asking over in the edge animate adobe forum and check how people do that in general. If they got it worked out we can check how we can make it work with the plugin.
Thanks for reporting the error, strange one as it's related to removing a directory which doesn't seem to exist. Problem seems to be the
glob($dir . '/*') call. I'll try to figure out what goes wrong. Any idea what server and PHP version you are working on?