Smartware problems on iMac

I can’t instal both WD smartware and WD + turbo Instaler on my imac. When installing WD + turbo it says 

The following +TURBO drivers were missing after the install:
It will not be possible to complete the install.

What can i do? It is something wrong with my WD My passport. I hust bought it so do i need to exhange it for a new one?

Thanks, Marta

Can anyone help please