VengefulAncient

jkp69, you are a godsend. I really didn't feel like replaying dozens of hours worth of quests I've done since FT-ing out of Junior's house. Your solution has immediately started Redania's Most Wanted even though I've since finished the entire Novigrad/Velen area and moved on to Skellige, and that's perfect. (I suspect it won't work if one is already done with Act 2 though.) I've added it to the Witcher Wikia pages about the involved quests just in case. Just out of curiosity, would you mind telling us how you've acquired the plot flags' names? I wouldn't be surprised if this was a Bethesda game but I wasn't aware this could be done easily (or at all) in TW3 as well. EDIT: Initially, I've found that even though this solution has started the quest, the witch hunters at Est Tayiar did not spawn, preventing me from progressing the quest. Thinking that this must be caused by the quest Ugly Baby having been started (I thought that it marks the end of Act 1 and thus "fails" certain quests automatically), I tried reloading several of my old saves to test and came to the conclusion that this fix isn't tied to your stage in the game (I've read about people using it even when they've reached Kaer Morhen and are doing Brothers in Arms), but rather which map you are on. You must be in Novigrad/Velen since this is where you normally get the quest; my mistake was running the commands while in Skellige (since that's where I was when I've found out about the fix) and only then FT'ing to Novigrad area. I hope this helps someone!

Thanks a lot, much appreciated. As indicated in this thread, there are several more users experiencing the same problem, and it only started after the Automatron DLC was installed - pretty strange.

Ugh, why did it take me half an hour to stumble upon this thread... I haven't used F4SE before Automatron, I've only tried to install it today (also for Place Everywhere), but I have exactly the same error and have ruled out all other possible causes. Disabling mods does nothing and the game launches just fine if I run it without F4SE. Can you guys please check your f4se_loader.log (located at C:/Users/<user>/My Documents/My Games/Fallout4/F4SE)? Mine says: "WARNING: something has started the runtime outside of f4se_loader's control. F4SE will probably not function correctly. Try running f4se_loader as an administrator, or check for conflicts with a virus scanner." This is of course nonsense, I'm not running a virus scanner, nor do I have any software rumored to cause issues with SKSE (video card monitoring, overlays etc - closed it all, and SKSE runs just fine with or without them, but not F4SE).