Two things to look at: 1. Make sure the "Full Detail Mesh" option is checked or the leaves will not export. 2. Try this with the "obj" format. If you are using 3ds format it has a limit as to how many faces it can contain in one object. A bunch of leaves can easily pass that limit and instead of getting an export error message from Carrara you get an messy 3ds file with parts missing. mdc