Hello there! I have a nice run with my Fallout 4 with a nice collection of SS-Stuff and everything is fine... until I wanted to go back to Red Rocket to help defending it... CTD. Okay, it happens, let's go to Sanctuary and walk from there in case there is some issue with loading all at once... CTD Okay, then let's see about the general region and go Vault 111, no problem. Walking the way down is fine, getting into the settlement between the 2 buildings is working as well, turning left and approaching the house with the workbench ... CTD So it is not loading the stuff in the region per se but something when something might come into view. Next attempt is getting into the settlement so I have the building menu and start the refresh of all the 41 plots... it's working... plot 5 ... plot 6? Can't remember having seen that one popping up when the CTD happens. Okay, another test, I just have had updated a few of the mods, let's roll back... let's deactivate... no, none of the new mods since it last worked when I had left the settlement for a long questchain so it can not be that. Last test, loading up the last save before starting on the quest with the new mod-order with the most up-to-date mods... and it works. As the questchain had been long and I made 2 levels, I had a lot of messages about upgraded plots here and there and likely some new ones I had more freshly set up and which had not yet upgraded must have had the honor of doing so, I suspect. Long story short, the question: Any way how I can find out what is happening? Right now it does seem to be an issue with a building, maybe some clutter or other decoration which tries to fire or spawn. I remember a similar issue back when Nuka World had been rather fresh and a mod I used had an issue with spawning the icon or some other graphic for the transit point. Wanting to get close made the game look for it, the mod had changed stuff so it was not found and CTD. As for master files, going by Vortex and how I was freshly building the modlist with the newest versions of the mods when I installed F4 anew a few weeks ago, I took care to have all the masters mentioned in any mod and I receive no warnings of any kind.