After developing a number of sites in versions of SilverStripe 2, I'm experimenting with SilverStripe 3. I've successfully installed SS3 and I'm running the default theme. I can access the CMS, I can change the theme. However I'm unable to add or modify page content. When I attempt to update a page the CMS screen goes grey. The only way to get things moving again is to modify the URL from http://localhost/Worksites/SilverStripe-cms-v3.0.2/index.php/admin/pages/edit/show/1 to http://localhost/Worksites/SilverStripe-cms-v3.0.2/index.php/admin/, at which point I return to the standard admin interface.

The page I have attempted to edit now has a 'note' by it stating that it has been [modified]. However my change has not been writen to the database.

But wait - there's more! I was only modifying an EXISTING default page in the SS install. If I set up a new page and go to publish once again, we go straight to a grey screen in the CMS, and it gains the label [draft]. However, any page content apart from the title is lost.

Anybody else struck this problem? How do I fix it?