We are upgrading SharePoint sites from MOSS 2007 to SharePoint 2013 using Content DB attach. Upgrade from 2007 to 2010 works fine. When we upgrade from 2010 to 2013, site has a lot of issues.
List views shows a message that 'The web Page cannot be found'.
NewForm/DispForm/EditForm of the lists are also missing. When I open the site using designer, I can see these files. When I try to open them I am getting this error message.
"soap:ServerServer was unable to process request. The file does not exist."
Are we missing on something?