Robert Sabuda did specfict illustrations early in his career and used his middle initial at the time. Thus his canonical name in ISFDB is Robert J. Sabuda. I did a test to see if I could add an author pseudonym from Robert Sabuda to Robert J. Sabuda.
http://www.isfdb.org/cgi-bin/ea.cgi?Robert_Sabuda displays "Author not found." This is correct.
A link is available for "Make This Author a Pseudonym" which goes to http://www.isfdb.org/cgi-bin/edit/mkpseudo.cgi?0. Clicking that link generates a Python error.
I suspect that the best fix would be to update ea.cgi to not display links to to the author specific functions when the author is not found.
* Author Data
* Make This Author a Pseudonym
* Titles
* Dup Candidates
Anonymous
Fixed in biblio/common.py 1.33. Implemented in r2009-37.