>I thought I had read something about it here recently, but have been
>unable to find anything in the LISTSERV logs or IBMLINK.

Go to www.adm.org to search for it - multiple hits.
From my notes on that msg:

        Can be caused by too long a file name/path name.  In NT, one can have
        shared directories.  If such a file is then given the maximum possible
        pathlength (255 chars), that in conjunction with the real NTFS on the
        disk causes the path that leads to the shared directory to be longer
        than the 255 char max.