Started yesterday afternoon for me. It's 3PM OCT 21 here, started around the same time OCT 20. It worked all morning today and then it got stuck on processing just like yesterday.
Older thread with same issue: https://software.intel.com/en-us/forums/intel-xdk/topic/623696
Server's dying i guess?
I'm suspecting it was due to the massive DOS attack that occurred on the east coast, which impacted Amazon. Our backend is hosted on Amazon services. See > http://siliconangle.com/blog/2016/10/21/a-massive-ddos-attack-took-down-twitter-amazon-and-other-top... < and > http://downdetector.com/status/level3/map/ < for details.