Quests aren't progressing, characters aren't initiating dialogue

[Darklustre]

So I'm playing the College of Winterhold quests, that I've played before just fine. For some reason the NPCs aren't initiating their dialogue, Tolfdir isn't leading the way through Saarthal, and I can't get the quest started. Once he goes in Saarthal, no one follows. I'm using ICOW, AFT and Interesting NPCs. I've used these all before with no trouble. I don't know what the problem is now.

What is it called when this happens because I'm not getting good search engine hits with what I put in my title. Thanks.

[TechAngel85]

You may not have completed the elements for the quest, or if you have Not So Fast - Mage's Guild installed, then that will slow things down and stop them from happening. If so, go sleep in your bed in the college for a night to see if anything progresses.

[Darklustre]

I guess I didn't specify well enough that I've done this quest several times and never had a problem before with it. That isn't the problem. The other students won't even go inside Saarthal. This isn't about elements of a quest. The NPCS don't move.

[Majorman]

Do you have "Not so Fast - Mage Guild"? Sounds like you've set some quest requirements under it and simply haven't met them all yet.