Thanks for your reply Bill_S.
Over the 2weeks of ownership this is one of the issues I’ve discovered & resolved on my own!
If I connect my WDPD (Western Digital Portable Drive) and run WDS (WD Smartware) before connecting my USB pen drive, all is fine and the newly assigned drive letter for the USB pen is recognised by WDS.
However … if I connect my WDPD & run WDS after connecting my USB pen, I have to remove the WDPD (using “safely remove my passport ….”, not just “Exit WD Smartware”) and re-connect WDPD/re-run WDS.
This is bearable, but creates another problem that I’ve been having with my WDPD & WDS!!! (see …