An edge case, this error or phantom error will occur seemingly out of nowhere when a user attempts to create a page on a publishing site.
Much like a report writer queries your print driver for margin and layout settings, SharePoint pulls up the master page template to layout a new publishing information. There’s a good chance you’ve removed and re-created your own “Portal Contributor” or “Portal Viewers” group. Be careful not to delete out-of-the-box SharePoint groups without thorough testing, better yet, rename the group instead of deleting it.
Grant read permissions to the master page library on the root of your portal (site collection).
Ulysses Ludwig is a SharePoint architect with over 16 years in the IT and computer industry. Ulysses' primary focus is SharePoint but he dabbles in the latest web technologies and likes to develop software in his spare time.
So I have noticed that Google refers lots of people to my blog for “Fly Out Menus”. I imagine many of you are disappointed when you find that the article is for enabling the fly out only on the top of the page...