According to the documentation, capabilities must be declared when an application requires programmatic access to certain user resources such as the Videos Library.
This page of the documentation also states:
All Windows Phone capabilities are not available for apps being developed specifically for Windows 10 Insider Preview.
I am building a Universal Windows Application for Windows 10 and I would like to register the capability to access the videos library in my package.appmanifest file. However, when I do so I receive an error:
The 'Name' attribute is invalid - The value 'videosLibrary' is invalid according to its datatype 'http://schemas.microsoft.com/appx/manifest/types:ST_Capability_Foundation'
Unfortunately, if I follow the link in the error message the page simply displays:
The resource you are looking for has been removed, had its name changed, or is temporarily unavailable.
Here is a screenshot of the code (note that the other capabilites work correctly):
Is it currently not possible to register capabilites for applications being developed for Windows 10 or am I missing something obvious?