Same issues here. I am in mid production and BAM, chaos. Now I can't sign in to the folio builder, digital publsihing site ect... What's the good word Adobe? Kind of need to get this stuff done and with the holiday crunch I can't really afford this wasted time.
Same problem here.
When I login it gives me the flash-generated pinwheel (at least I think it is Flash by that point) and then shows an alert for a second and then returns me to digitalpublishing.acrobat.com.
The alert has a yellow triangle with an exclamation point and says something starting with "unable" but doesn't last long enough for me to get a good look at it.