Error(s) in re-building vignettes:
--- re-building ‘BD_EM.Rnw’ using Sweave
Loading required package: numDeriv
Error: processing vignette 'BD_EM.Rnw' failed with diagnostics:
Running 'texi2dvi' on 'BD_EM.tex' failed.
LaTeX errors:
! LaTeX Error: File `versions.sty' not found.

Type X to quit or <RETURN> to proceed,
or enter new name. (Default extension: sty)

! Emergency stop.
<read *> 
         
l.19 \usepackage
                {amsmath}^^M
!  ==> Fatal error occurred, no output PDF file produced!
--- failed re-building ‘BD_EM.Rnw’

--- re-building ‘BD_EM_wImmig.Rnw’ using Sweave
Loading required package: numDeriv
Error: processing vignette 'BD_EM_wImmig.Rnw' failed with diagnostics:
Running 'texi2dvi' on 'BD_EM_wImmig.tex' failed.
LaTeX errors:
! LaTeX Error: File `versions.sty' not found.

Type X to quit or <RETURN> to proceed,
or enter new name. (Default extension: sty)

! Emergency stop.
<read *> 
         
l.20 \usepackage
                {amsmath}^^M
!  ==> Fatal error occurred, no output PDF file produced!
--- failed re-building ‘BD_EM_wImmig.Rnw’

--- re-building ‘BD_MCMC.Rnw’ using Sweave
Loading required package: numDeriv
Error: processing vignette 'BD_MCMC.Rnw' failed with diagnostics:
Running 'texi2dvi' on 'BD_MCMC.tex' failed.
LaTeX errors:
! LaTeX Error: File `versions.sty' not found.

Type X to quit or <RETURN> to proceed,
or enter new name. (Default extension: sty)

! Emergency stop.
<read *> 
         
l.20 \usepackage
                {amsmath}^^M
!  ==> Fatal error occurred, no output PDF file produced!
--- failed re-building ‘BD_MCMC.Rnw’

--- re-building ‘sim_condBD.Rnw’ using Sweave
Loading required package: numDeriv
Error: processing vignette 'sim_condBD.Rnw' failed with diagnostics:
Running 'texi2dvi' on 'sim_condBD.tex' failed.
LaTeX errors:
! LaTeX Error: File `versions.sty' not found.

Type X to quit or <RETURN> to proceed,
or enter new name. (Default extension: sty)

! Emergency stop.
<read *> 
         
l.20 \usepackage
                {amsmath}^^M
!  ==> Fatal error occurred, no output PDF file produced!
--- failed re-building ‘sim_condBD.Rnw’

SUMMARY: processing the following files failed:
  ‘BD_EM.Rnw’ ‘BD_EM_wImmig.Rnw’ ‘BD_MCMC.Rnw’ ‘sim_condBD.Rnw’

Error: Vignette re-building failed.
Execution halted