Basically the quest starts and there is no dialogue or objective markers like there's supposed to be according to walkthroughs. The objective text states "Investigate Hive Activity: Head to Sorrow's Harbor and investigate the strange Hive congregations within," but nothing occurs if you head to Sorrow's harbor or kill enemies. It seems it's bugged in it's entirety.
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BUNGIE may have fixed this. Had no problem this morning 6:00 am CST