Are you using version 5 or a nightly build? If not then they are probably problematic
More detailed answer:
The library file version understood by kicad 4.0.x is 2.3.
The problem with symbols is that kicad 4 does not display the content of the description file (datasheet, tags, description) if the library is version 2.4 (Kicad does not throw any error message.)
Library file format version 2.4 allows for longer pin number strings.
As the official libs should not contain symbols that use the new features you could simply change the version information in the file header. (There is no guarantee that this works)
For footprints the problem is that the new lib has footprints that use rounded rectangle or polygon pads. There is a script that deletes such footprints from the library. So you could use a reduced library in kicad 4.0.7. More details see: How can i install a specific version of the footprint library? (Information about how to use version 5 libs in version 4 is in the second post of that thread.)