Earlier in the game I couldn't continue the main quest because of the Join the Stormcloaks bug (more information): I had to use the setstage xyz command to fail the Joining the Stormcloaks quest to proceed.
But now I can't take it on. I talked to the guy in Windhelm who sent me to kill an Ice Wraith, but after ending the conversation with him, the quest disappeared from my journal and I can't see it anywhere: I tried using the setstage command again to make progress (setstage CW01B 100 should make the quest go to return to Galmar stage, but nothing happens.
What can I do?
Best Answer
One of the footnotes on Joining the Stormcloaks (UESP) reads:
(Emphasis mine.) Looks like you're not a true brother or sister of Skyrim.
However, if you have a save from before using the console (always a good precaution, but not one we always remember), you could try going back and instead of advancing the Stormcloaks questline, advance the main one. You may miss a bit of content, but at least you'll be able to do both.
To skip past talking to Ulfric, use
setstage mq302 30. Alternatively, just complete "Joining the Stormcloaks" (and possibly also "The Jagged Crown") so that Ulfric will stop acting like your mission commander and start acting like a leader at a meeting.