[OS X TeX] Latexmk terminates every other time

[Michael Kubovy]

Whenever I change a citation in an article, I get:

Transcript written on 20090921mk.log.
Latexmk: Found input bbl file '20090921mk.bbl'
Latexmk: Log file says output to '20090921mk.pdf'
Latexmk: Found bibliography file(s) [/Users/mk/Documents/Papers/mk.bib]
Collected error summary (may duplicate other messages):
   bibtex 20090921mk: Run of rule 'bibtex 20090921mk' gave a non-zero  
error code
Latexmk: Use the -f option to force complete processing.
Latexmk: All targets (20090921mk.pdf) are up-to-date

The next run is fine:

Transcript written on 20090921mk.log.
Latexmk: Found input bbl file '20090921mk.bbl'
Latexmk: Log file says output to '20090921mk.pdf'
Latexmk: Found bibliography file(s) [/Users/mk/Documents/Papers/mk.bib]
Latexmk: All targets (20090921mk.pdf) are up-to-date

I'm running
Latexmk: This is Latexmk, John Collins, 10 September 2009, version:  
4.10d.

on Mac Snow Leopard using texlive 2008.

Suggestions?


_____________________________
Professor Michael Kubovy
University of Virginia
Department of Psychology
USPS:     P.O.Box 400400    Charlottesville, VA 22904-4400
Parcels:    Room 102        Gilmer Hall
       McCormick Road    Charlottesville, VA 22903
Office:    B011    +1-434-982-4729
Lab:        B019    +1-434-982-4751
Fax:        +1-434-982-4766
WWW:    http://www.people.virginia.edu/~mk9y/