Yes I did. I dont know what to do. I guess I will just keep trying and see what happens or use the save editor to modify the dialougue so it is all new.
Did you have a dialogue with Othra with important decision marker?
After finding the lake of purification Othra shows up and you can say to her that she should tell others or keep it a secret. After that there should be a conversation about the lake when you talk to her. There you have to confirm your decision.
After that there is an option "Wait for Roushk" when you are in corrupted lake.