Had an idea that it might be caused by space in my KDС path, reinstalled it. No changes. Manually found this dll in other modding tools folder, copied to the same folder with editor.exe. Was asked for several other dlls, which I also found in other modding tools folders. This exciting process stopped, when editor didn't manage to find iquin56.dll. No such files on my PC. Even google doesn't know about this dll. Obviously, all this is completely abnormal. Does anybody have a good suggestion, how to fix it?