tar again

[Don Glover]

I have a tape backup made with tar thru the sysadm id, I used the dirs/files
option (this is under xenix v 2.3.2) now I wish to get a single file back.
I choose restore, I choose dirs/files, I give it the media type, I give it 
the file name path and all. The tape drive whirs for a long while and I get the
message back. 1 file(s) not extracted.  can some one give me a clue as to what I
am doing wrong?