SiteStudio

I have switched to dedicated IP and my images are gone.

Go to the SiteStudio settings page, click Refresh Images link, abnd republish the site

Can I build a site with SiteStudio and then edite it with Frontpage?

Yes, but the you won't be able to edit it with SiteStudio anymore.

I edited my site with FrontPage. Why am I having problems with it now?

The problem is that FrontPage corrupts files with security settings. This is why it is strongly recommended to avoid using FrontPage for editing sites created with SiteStudio.