you locked the A18.1 b7 thread just as I was about to reply to you with the info you requested on my bug report in that thread (at link:
https://7daystodie.com/forums/showth...=1#post1061435 ):
I tried using your dbs report tool & screenshot-taking function to get screenshots into the game folder of all the skill trees, but it was a massive hassle and having the console up meant you couldn't see half the skill tree anyway because of the red error spam in the console. So I used Steam's screenshot function to get the screengrabs you wanted instead, which was a lot easier for me to get clean screenshots (I closed the console and took each screenshot in the brief second before the console popped back up again with the next error message) and also upload them all as a block.
Anyway you can find all my 7DTD screenshots on Steam at the link below - there are only 2 screenshots in my 7DTD Steam screenshot folder unconnected with this bug at time of writing - and I have captioned the 5 skill trees with each skill tree's name so that you can pick those out easily. You did not say if the skill trees included the perks as well (as some of those unlock recipes too), so I took screenshots of all my perk unlocks for you as well, and they are at this link too:
https://steamcommunity.com/id/Malkry...iles&view=grid
While taking the last few screenshots I felt the client was lagging a bit - weirdly it does this even in solo play, which it shouldn't as no networking is involved in a solo game, but only when I am close to a Forge and Cement Mixer that are processing large amounts of cement and concrete - which I have been doing on both my SP game and the main MP game I have been playing, processing large amounts of concrete and concrete blocks for building with. It has been particularly bad since yesterday's A18.1 patch in particular - lots of hitching/lagging around the forge and cement mixer - and considerable UI lag when in the workshop screens for both of those pieces of equipment.
Accordingly I just struggled towards my cement mixer and forge (which are next to each other), turning off the console every second and inching forwards, intending to stop all my crafting jobs to try and stop the lag so that I could complete the screenshot task for you without further hassle (as even my steam screenshot key was lagging and not taking the screenshot until a second too late, after the error message console had flashed back up all the red error message text) and something very odd happened... the red error message spam stopped as soon as I stopped all the crafting jobs on the forge and the cement mixer.
Now I stopped the Forge jobs first (it was making Cement from Small Stones I had smelted) and then I immediately stopped all queued jobs in the Cement Mixer (it was making Concrete Mix from Crushed Sand, Small Stones and Cement, though it also had another job queued but not started to make Wet Concrete Blocks from Concrete Mix), and I did it so fast that only then did I realise that the red error message spam had completely stopped. So it was one of those two worktables and/or recipes that was causing the spam, so if it's a recipe causing the error as you say then it is either the Cement recipe on the Forge, or the Concrete Mix recipe on the Cement Mixer. I am fairly sure it took me more than a second to stop both jobs, so my gut instinct is that the Cement recipe was causing it, as I stopped that recipe from processing on the Forge first.
It may be because I have been processing such large quantities of Cement or Concrete (thousands of both, the past few days) that is causing both the lag and the error spam, or maybe an issue with the recipe in A18.1 is causing both - the weird thing is that it affected my single player game only, but not my multiplayer game where, if anything, I am processing even more cement/concrete than in my solo game (as in my solo game I am just upgrading and intending to build a fortified moat around an existing Fire House, while in my multiplayer game we're basically building a mega-project, fortifying an entire steep hill over 100m tall to be a fortress).
Anyway it looks like my SP game is playable again for now - just as well, as I don't know how to revert game branches or do the other things you suggested to start a new character in the same world - and tbh without my skills on my existing character I would have been in a mess anyway, as I wouldn't have the skills to progress with the partially built defences in my game just 2 days from a Blood Moon.
Do you want me to report again if the red error text spam returns and what triggers it? I fully intend to try making more cement and concrete so do you want me to follow repro steps and see if there is a certain amount of concrete/cement or a combination of things that causes the error spam?