FAQ wrote:

Riders are floating and aren't using any equipment.
This means that the equipment isn't in the right folders, and thus you've probably not installed the Real Name DB correctly.

Install again and make sure that the Real Name DB is installed in the folder where your Pro Cycling Manager is installed.

In Steam, that's probably something like C:\Program Files\Steam\steamapps\common\Pro Cycling Manager - Season 2013.

In other versions, it's C:\Program Files\Cyanide\Pro Cycling Manager - Season/Seizonen/Saison or something like that 2013