Steps to reproduce
1. Take a 6.1.30 bundle.
2. Create a DDL definition and put a File Upload field on it.
3. Create a DDL list based on this definition and add a couple of records to it.
4. Place a DDL Display portlet on a page and select this list. Assess that it is listed correctly.
5. Upgrade this bundle to 6.2 SP11.
Result: The DDL Display portlet does not list correctly anymore. Instead of the file names, you can see the message "Content could not be found".
Expected: The DDL Display portlet displays the file uploaded files names.