Whether it makes a diiference or not, I always "eject" my thumbdrive before removing it. Advice given way back.


The thumbdrive, when I insert it still is rcognized by Windows Explorer as the drive letter it always has been. H: . Even when I "walk" windows to the data source, it can't find a table to reference.


Shortcuts on my desktop to files on the thumbdrive open. Whatever the issue, it seems exclusive to mail merge.


I even tried to do a fresh (new document, different location of source data) mail merge , exclusive of the thiumbdrive and it still failed. No error, but couldn't find the source worksheet in the workbook. I can just hope that IT chooses to repair Office.