A little while ago a bug was reported in the position accuracy of the scenProc placed autogen library objects. After some debugging it indeed turned out that the location of these objects was wrong. And the bigger the size of the library object, the bigger the position offset.
I have now fixed this issue, so from tomorrow’s development release you should see that your library objects are placed more accurate.
A bug was already reported in the heading of the library objects. I still have to investigate that, but there seems to be a small offset in there as well. More news about that soon hopefully.