Board Thread:Online Discussion/@comment-98.86.198.238-20130813033724/@comment-6881629-20130813095128

When season unending starts the civil war will stop until you finish all the main questline you should then be able to go back to war but doing both at the same time can be bad you might be ok though as your still very early in the civil war.

For Season Unending convince Tullius and Ulfric to attend. Ask Ulfric first he should agree when you mention the Greybeards then go to Tulius who should agree when he hears Ulfric is going and return to the Greybeards. Forget about the Crown until after you've defeated Alduin.

Its to late now but if you want to do the civil war do it all as early as you can you'll avoid some bugs and with the war won you won't even have to do season unending.