Thanks for the reply, I've tried everything I can think of - using safari, chrome, firefox, renaming the file, changing the destination. No dice. Will send you a request.

Hi, I created a home using the online tool, but now want to be able to work on it offline, using the software installed on my mac. When I try to export my home I get an error message ("Can't create SH3d file"). What am I dong wrong?