IE8 JS Error in edge.5.0.1.min.js

Hello,

I've run into an issue using images generated in Edge Animate in IE8.

I generated a poster image for my animation and set it as the down-level stage. If I then turn on responsive scaling (a requirement for my project) and export it, I see a blank screen and the following JS error:

'Message: 'window' is null or not an object

Line: 81

Char: 371

Code: 0

URI: http://172.16.16.1:8000/animations/edge_includes/edge.5.0.1.min.js'

If I turn off responsive scaling, the poster image loads as expected and the JS error does not occur.

Any thoughts on this would be greatly appreciated! I'm happy to provide additional information to aid in the debugging process.

Thanks!