Strange error since 1.8.1

Since 1.8.1 every time I load my main game file I get the following fatal error: Cannot remove clip volume ‘0000029DCOAC9EE’ from rtree. … Any ideas?

I have the same issue. No idea what is causing it.

It seems like a lot of people are having issues with the game since the last patch. Try verifying your game files by right clicking on the game in your steam library, click the “Local Files” bar from the top of the window, then click " Verify integrity of game files"

Did not help. But the issue is happening only in one playline I have started playing in previous update. May be it is cause by some MOD, because I have used some in new storyline. But the first storyline works even with MODs installed.