0 - 1 of 1 tags for Data Source Explorer Load Preference

Hello:
I installed Teradata Studio 15.11. For Data Source Explorer to list less objects, from Windows--Perferences--Teradata Datatool Preferences -- Data Source Explorer Load Preference, I try to select User Choice (includes DBC) for What to load. However, this option is grayed out.
I don't have the problem with the version 15.10.