Error(s) in re-building vignettes:
  ...
--- re-building ‘multiple.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

Error: processing vignette 'multiple.Rnw' failed with diagnostics:
Running 'texi2dvi' on 'multiple.tex' failed.
LaTeX errors:
! Paragraph ended before \@tempa was complete.
<to be read again> 
                   \par 
l.103 
      
! Paragraph ended before \@tempa was complete.
<to be read again> 
                   \par 
l.118 
      
! Paragraph ended before \@tempa was complete.
<to be read again> 
                   \par 
l.160 
      
--- failed re-building ‘multiple.Rnw’

--- re-building ‘pse_tutorial.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

Warning in regularize.values(x, y, ties, missing(ties)) :
  collapsing to unique 'x' values
Warning in regularize.values(x, y, ties, missing(ties)) :
  collapsing to unique 'x' values
Warning in regularize.values(x, y, ties, missing(ties)) :
  collapsing to unique 'x' values
Warning in regularize.values(x, y, ties, missing(ties)) :
  collapsing to unique 'x' values
Warning in regularize.values(x, y, ties, missing(ties)) :
  collapsing to unique 'x' values
Warning in regularize.values(x, y, ties, missing(ties)) :
  collapsing to unique 'x' values
Error: processing vignette 'pse_tutorial.Rnw' failed with diagnostics:
Running 'texi2dvi' on 'pse_tutorial.tex' failed.
LaTeX errors:
! Paragraph ended before \@tempa was complete.
<to be read again> 
                   \par 
l.272 
      
! Paragraph ended before \@tempa was complete.
<to be read again> 
                   \par 
l.292 
      
! Paragraph ended before \@tempa was complete.
<to be read again> 
                   \par 
l.307 
      
! Paragraph ended before \@tempa was complete.
<to be read again> 
                   \par 
l.423 
      
! Paragraph ended before \@tempa was complete.
<to be read again> 
                   \par 
l.441 
      
! Paragraph ended before \@tempa was complete.
<to be read again> 
                   \par 
l.452 
      
--- failed re-building ‘pse_tutorial.Rnw’

SUMMARY: processing the following files failed:
  ‘multiple.Rnw’ ‘pse_tutorial.Rnw’

Error: Vignette re-building failed.
Execution halted