I can't kill Legate Rikke she is always reborn in the Castle after conversations with Ulfric. Tullius kneels he is wounded and doesn't speak. Ulfric stands in an other corners in the room and do nothing. I kill Rikke but she rises from the floor and fights to me again and again. Meanwhile the quest of liberation of Haafinger is active, because Galmar doesn't respond when I talk to him. The quest arrow is on Galmar and the mission completed. In Fact, Galmar is located two places in same time: In the Stormcloak Camp and in the Castle Dour. And does or speaks nothing in both place.
2 Main quest: Fallen Odahviing
We are on the balcony of Dragonsreach with the Jarl and his warriors. I choose "Call Dragon" shout and use it. I am shouting all of day than an insane man. But th dragon doesn't arrive. Nothing happens, only the Jarl talks "we are ready, we are ready, we are ready".
I am very sad I can't finished the most important quests due to annoying faults of the game. Version is 1.5.26.0.5, this number is seen when I press ESC.

It work fine for me, then I only did imperial side.