How are you using the Edge Animation? Give more details.
I'm using the .oam file in combination with Drupal CMS.
There is NO xx_edgePreload.js located in the .oam file. But I can see that 'edge.5.0.0.min.js', is building a reference to it. But why?
...Z?(window.edge_authoring_mode||(m?(k.definePreloader(m),e()):k.load(c+"_edgePreload.js" ,e)), ....
I've tried it with and without preloader publishing options (immediate | polite).
In line (m ? (k.definePreloader(m),e()) : k.load(c+"_edgePreload.js" ,e) , always definePreloader(m) will be called. There is no concept of _edgePreload.js file in the new Edge for published .oam file.
I think the Drupal plugin you are using to import edge composition into Drupal project is looking for _edgePreload.js file, which is causing the issue.
Drupal plugin needs to be updated for the new .oam file.
So, I understand that .oam animation publishing files are not backwards compatible!?
Simply adding an empty "_edgePreload.js", only refering to the new situation, would be sufficient for compatibillity reasons, .... .
But thanks for you answer, I dropped .oam and go for iframes and html.
Have you updated the new version of Edge Animate?
Because if you have the new filing system when publishing and creating Edge projects doesn't have the _edgePreload.js any more its added somewhere else.