Error(s) in re-building vignettes:
  ...
--- re-building ‘ConfoundingPotential.Rnw’ using Sweave
Loading required package: Hmisc
Loading required package: lattice
Loading required package: survival
Loading required package: Formula
Loading required package: ggplot2

Attaching package: ‘Hmisc’

The following objects are masked from ‘package:base’:

    format.pval, units

Loading required package: SparseM

Attaching package: ‘SparseM’

The following object is masked from ‘package:base’:

    backsolve

Loading required package: grid
Error: processing vignette 'ConfoundingPotential.Rnw' failed with diagnostics:
Running 'texi2dvi' on 'ConfoundingPotential.tex' failed.
LaTeX errors:
! LaTeX Error: Option clash for package color.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
--- failed re-building ‘ConfoundingPotential.Rnw’

--- re-building ‘Radar.Rnw’ using Sweave
Loading required package: Hmisc
Loading required package: lattice
Loading required package: survival
Loading required package: Formula
Loading required package: ggplot2

Attaching package: ‘Hmisc’

The following objects are masked from ‘package:base’:

    format.pval, units

Loading required package: SparseM

Attaching package: ‘SparseM’

The following object is masked from ‘package:base’:

    backsolve

Loading required package: grid
Error: processing vignette 'Radar.Rnw' failed with diagnostics:
Running 'texi2dvi' on 'Radar.tex' failed.
LaTeX errors:
! LaTeX Error: Option clash for package color.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
--- failed re-building ‘Radar.Rnw’

--- re-building ‘TreatmentPatterns.Rnw’ using Sweave
Loading required package: Hmisc
Loading required package: lattice
Loading required package: survival
Loading required package: Formula
Loading required package: ggplot2

Attaching package: ‘Hmisc’

The following objects are masked from ‘package:base’:

    format.pval, units

Loading required package: SparseM

Attaching package: ‘SparseM’

The following object is masked from ‘package:base’:

    backsolve

Loading required package: grid
Error: processing vignette 'TreatmentPatterns.Rnw' failed with diagnostics:
Running 'texi2dvi' on 'TreatmentPatterns.tex' failed.
LaTeX errors:
! LaTeX Error: Option clash for package color.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
--- failed re-building ‘TreatmentPatterns.Rnw’

SUMMARY: processing the following files failed:
  ‘ConfoundingPotential.Rnw’ ‘Radar.Rnw’ ‘TreatmentPatterns.Rnw’

Error: Vignette re-building failed
Execution halted