The point about the "hot point" is the most important part. The Replicator uses the Hot Point of an object to attach to the surface. I found the same problem the 1st time I used the replicator. After scaling my trees, they ended up with the hot point where the original had been before scaling... but the tree scales towards the center of the object... leaving the hot point hanging in space a distance from the bottom of my tree. If you move your hot point to the bottom of the tree AFTER scaling the tree, you'll find the replicator tool works fine. :D Hope this helps! Happy turkey day to those from the USA!