Aye, all of this advice is good, but not the CURE.... When you're saving such a large file, what you should do is save it under a different file name. Make it a serial thing, and delete the old files yourself. What's going on is that Bryce wasn't written for Windows, and has a problem deleting it's tempfiles and such. Don't bother with it, 90% of your current save times come from this problem. Just save it under a different filename! And your filesize isn't too incredulous, you can easily max your machine out using booleans alone... I can't wait to see your castle, can we see a preview? I went to your site but couldn't find it.