Error(s) in re-building vignettes:
  ...
--- re-building ‘evtree.Rnw’ using Sweave
Loading required package: partykit
Loading required package: grid
Loading required package: libcoin
Loading required package: mvtnorm
Loading required package: survival
Loading required package: TH.data
Loading required package: MASS

Attaching package: 'TH.data'

The following object is masked from 'package:MASS':

    geyser

Error: processing vignette 'evtree.Rnw' failed with diagnostics:
Running 'texi2dvi' on 'evtree.tex' failed.
LaTeX errors:
! Paragraph ended before \@tempa was complete.
<to be read again> 
                   \par 
l.319 
      
! LaTeX Error: Not in outer par mode.

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Type  H <return>  for immediate help.
 ...                                              
! LaTeX Error: Not in outer par mode.

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 ...                                              
! LaTeX Error: Not in outer par mode.

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 ...                                              
! Paragraph ended before \@tempa was complete.
<to be read again> 
                   \par 
l.829 
      
! LaTeX Error: Something's wrong--perhaps a missing \item.

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Type  H <return>  for immediate help.
 ...                                              
! LaTeX Error: Something's wrong--perhaps a missing \item.

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Type  H <return>  for immediate help.
 ...                                              
! LaTeX Error: \begin{minipage} on input line 799 ended by \end{Soutput}.

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 ...                                              
! LaTeX Error: \begin{minipage} on input line 799 ended by \end{Schunk}.

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 ...                                              
! Paragraph ended before \@tempa was complete.
<to be read again> 
                   \par 
l.855 
      
! LaTeX Error: Not in outer par mode.

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Type  H <return>  for immediate help.
 ...                                              
! LaTeX Error: Not in outer par mode.

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 ...                                              
! Paragraph ended before \@tempa was complete.
<to be read again> 
                   \par 
l.1052 
       
! LaTeX Error: Not in outer par mode.

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Type  H <return>  for immediate help.
 ...                                              
! Paragraph ended before \@tempa was complete.
<to be read again> 
                   \par 
l.1071 
       
! Extra }, or forgotten \endgroup.
\@endfloatbox ...pagefalse \outer@nobreak \egroup 
                                                  \color@endbox 
l.1073 \end{figure}
                   
! Extra }, or forgotten \endgroup.
\color@endbox ->\color@endgroup \egroup 
                                        
l.1073 \end{figure}
                   
! LaTeX Error: Not in outer par mode.

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Type  H <return>  for immediate help.
 ...                                              
! Paragraph ended before \@tempa was complete.
<to be read again> 
                   \par 
l.1104 
       
! LaTeX Error: Not in outer par mode.

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Type  H <return>  for immediate help.
 ...                                              
! LaTeX Error: Not in outer par mode.

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Type  H <return>  for immediate help.
 ...                                              
! LaTeX Error: Not in outer par mode.

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Type  H <return>  for immediate help.
 ...                                              
! Paragraph ended before \@tempa was complete.
<to be read again> 
                   \par 
l.1198 
       
! LaTeX Error: Not in outer par mode.

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Type  H <return>  for immediate help.
 ...                                              
! Paragraph ended before \@tempa was complete.
<to be read again> 
                   \par 
l.1249 
       
! LaTeX Error: \begin{figure} on input line 1243 ended by \end{document}.

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 ...                                              
! You can't use `\end' in internal vertical mode.
\enddocument ...es \z@ \Call@AtVeryVeryEnd \@@end 
                                                  
l.1292 \end{document}
                     
! LaTeX Error: \begin{figure} on input line 1243 ended by \end{document}.

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Type  H <return>  for immediate help.
 ...                                              
! Emergency stop.
<*> \nonstopmode \input ./evtree.tex
                                    
*** (job aborted, no legal \end found)

!  ==> Fatal error occurred, no output PDF file produced!
--- failed re-building 'evtree.Rnw'

SUMMARY: processing the following file failed:
  'evtree.Rnw'

Error: Vignette re-building failed.
Execution halted