I got the error from models at the Wiremonger site. There's a post up here with at least three people saying they are happy with them so I don't think it's that simple. I'm sure we're reffering to the same error. It says " this file contains no 3d facet information, therefore no model was imported." I've also had quite a few that wouldn't import at all. I know there's some escoteric secret about inverting the (?) when importing...