[Rd] Vignette problem

[Terry Therneau]

I'm having a problem rebuilding a package, new to me in R 2.15.0 
(Linux)  It hits all that contain the line
\usepackage[pdftex]{graphics}

and leads to the following when running R CMD check on the directory.  
(I do this often; a final run on the tar.gz file will happen before 
submission.)
Since I float and resize my figures, removing the line is fatal in other 
ways.

----------------------------

* checking re-building of vignette PDFs ... NOTE
Error in re-building vignettes:
   ...
/usr/share/texmf-texlive/tex/latex/pdftex-def/pdftex.def:414: Package 
pdftex.de
f Error: PDF mode expected, but DVI mode detected!
(pdftex.def)                If you are using `latex', then call `pdflatex'.
(pdftex.def)                Otherwise check and correct the driver options.
(pdftex.def)                Error recovery by switching to PDF mode.

See the pdftex.def package documentation for explanation.
Type  H <return>  for immediate help.
  ...

l.414     }\@ehc

?
/usr/share/texmf-texlive/tex/latex/pdftex-def/pdftex.def:414: Emergency 
stop.
  ...

l.414     }\@ehc

No pages of output.
Transcript written on lmekin.log.
/usr/bin/texi2dvi: latex exited with bad status, quitting.
make: *** [lmekin.pdf] Error 1
Error in buildVignettes(dir = 
"/home/therneau/research/surv/Hg/coxme.Rcheck/vign_test/coxme") :
   running 'make' failed
Execution halted

-----------------------------------------

The resulting .tex file work just fine with pdflatex, however.  I 
haven't found any reference to this elsewhere, but my guess is that it 
is something simple that I've missed.

Terry T.