> My guess is that you didn't choose proper document layout while creating > new > document. What you've described looks like choosing Single page document > instead of Double side.
I think the problem here is that the dialog is very confusing. Scribus will NOT take care of the impositioning. The document layout only affect how the pages are displayed/arranged on the screen. They will be exported/printed as single pages. I really think it should be called "display layout" instead of "document layout". /Peter
