I talked to Father on the roof of the CIT building where he told me to attend a meeting in the institute.
Rather than go directly to this meeting, I went and did some quests for the Brotherhood of Steel. After completing Tactical Thinking, the quest Mass Fusion was triggered. I need to talk to Justin Ayo to continue that quest.
When I go to the meeting for Mankind Redefined, Father tells me to sit down in order to discuss some important things. The problem now is that sitting down doesn't change anything, father doesn't begin the meeting and I can sit there for several days without anything happening. Justin Ayo is one of the people at the meeting, waiting for Father to talk.
I already have tried the quest with and without a companion and have also tried progressing with the brotherhood.
Reloading isn't an option as I have progressed many hours since the then.
How do I continue with the Institute quest line?