Is this regarding the PathCopy script from Smustard?
If so, I suspect that you have scaled the items you are trying to copy. If it's a component instance, PathCopy uses the definition and inserts new instances along the path. This would explain the change in scale. Also, the script uses the component axes for the initial placement along the path. So, you may need to redefine your component's axes, or inside the component rotate the geometry at the component's origin.
There are a few issues that I have on my list to update for PathCopy, but time is short...