Adrian Aichner writes:
 Gruss bug team: 
 Please honor value of `directory-sep-char' instead of using
hard-coded
 "/" throughout the EFS package. 
By the way, `expand-file-name' is the best way to create file names.
This way, there is no concatenation needed.
Also, `file-name-as-directory' is also a useful function.
-- 
Colin