If you are using Sitecore Reference Storefront 8.1 version 8.1.478.0 or earlier, you might get a site rendering problem on the account management page after you upgrade your Sitecore XP 8.1 to Update-2.
The following error messages might appear:
The layout for the requested document was not found.
The page you are looking for doesn't exist.
There is a compatibility problem between the earlier released Sitecore Reference Storefront site and Sitecore XP 8.1 Update-2. It has been fixed in Sitecore Reference Storefront site version 8.1.478.0.
To resolve the issue, consider the following option: