We are a hobbyist group of game developers who plan on putting out a ton of fun games.

That is, as soon as we can figure out how to upload our game... can't seem to upload the file for our first game on Newgrounds, but just fine everywhere else.  No matter what browser... hmm...

When attempting to attach the file to upload, the browser returns the following javascript console error:

Uncaught DOMException: Failed to read the 'contentDocument' property from 'HTMLIFrameElement': Blocked a frame with origin "https://www.newgrounds.com" from accessing a cross-origin frame.