Is there ever a simple 'fix' for computer issues? No prob with ATI here. I've never had files import consistently from one program to another. Even though you'd think that all 3DS files or any other file formats should be the same, how they record data is different in little ways that can drive you mad. I remember reading a post that even 3DS saves it's file data different if you export as 3DS rather than do a Save of the same file. If you have Amapi, try using that as an interpreter between the CAD programs and Carrara. (import from CAD to Amapi, save-as Carrara and then open in Carrara) Occasionally, it's worked better for me to have files saved as IGES or .stl instead of 3DS. There's no consistent rule though. Large bounding boxes. I hate those. Usually there is nothing out there but coordinates. I just go to the timline tray and group eveything that was imported except the top level of the group, move my group out and delete the what's left of the imported group. Good luck. Mark