Sorry to add yet another question with a similar topic, but this is beginning to drive me mad, and none of the other resolved topics for this problem seem to apply to me.
I have developed a blog on my localhost server which is running WP 3.5.1. It is a very simple site, consisting solely of vanilla pages, no blog posts, and no fancy plugins used. I then exported it using the WP exporter. When I tried to upload it to my development server, to another WP 3.5.1 installation, which was brand new and completely empty with no activated plugins, I just got "failed to import" and "invalid post type" errors.
Being able to develop locally and then upload to my development server so that clients can see it is a vital part of my workflow. Can anyone suggest what might be going wrong here? I note that the wordpress importer has not been tested on 3.5.1 - should I be developing on an earlier version of WP?!