MyBookWorld used with PC's and Mac

I have a MyBookWorld (white light) external network hard drive.  I was using the drive for my Time Machine backup and also backups for 3 pc’s. I replaced the hard drive on the MAC to upgrade to a larger drive and can no longer access the network drive through Time Machine.  All other programs on the MAC work just fine. The pc’s recognize the drive just fine but not the MAC. 

Any suggestions?

You should try contacting WD’s Technical Support about this. You can do so either by phone or email.

To Contact WD for Technical Support