Value does not fall within the expected range - Page settings

I found an error when trying to change the Page Settings of a default.aspx in one of my sites today.

I wanted to update the page layout template in use but on selecting Page Settings from either the Page drop down in edit mode or from the Site Content & Structure page i received the follwoing error:

Value does not fall within the expected range

1. Open the site in SharePoint Designer
2. Select File / Export and choose the page you are trying to update
3. Open the page locally using Notepad
4. Search the source for “mso:PublishingPageLayout"
5. Look at the path :
   
   http://mossdev/_catalogs/masterpage/customLayout.aspx, Custom Reports Layout
   
    
6. The string points to my old development environment http://mossdev
7. Update the path to the live environment eg: http://mosslive
8. Save the file
9. In SharePoint Designer select File / Import and choose the modified file
10. Check the files back in and approve them.
     

Problem solved - i can now update the page settings with no error.