Error(s) in re-building vignettes:
  ...
--- re-building ‘biogas_quick_start.Rnw’ using knitr
Error: processing vignette ‘biogas_quick_start.Rnw’ failed with diagnostics:
Running ‘texi2dvi’ on ‘biogas_quick_start.tex’ failed.
LaTeX errors:
! You can't use `macro parameter character #' in horizontal mode.
l.231 library(biogas)  data("vol")dim(vol)#
                                           # [1] 288   4
? 
! Emergency stop.
! Emergency stop.
l.231 library(biogas)  data("vol")dim(vol)#
                                           # [1] 288   4
End of file on the terminal!

!  ==> Fatal error occurred, no output PDF file produced!
--- failed re-building ‘biogas_quick_start.Rnw’

--- re-building ‘calcBgMan_function.Rnw’ using knitr
Error: processing vignette ‘calcBgMan_function.Rnw’ failed with diagnostics:
Running ‘texi2dvi’ on ‘calcBgMan_function.tex’ failed.
LaTeX errors:
! You can't use `macro parameter character #' in horizontal mode.
l.160 data("sludgeTwoBiogas")dim(sludgeTwoBiogas)#
                                                  # [1] 324   8
? 
! Emergency stop.
! Emergency stop.
l.160 data("sludgeTwoBiogas")dim(sludgeTwoBiogas)#
                                                  # [1] 324   8
End of file on the terminal!

!  ==> Fatal error occurred, no output PDF file produced!
--- failed re-building ‘calcBgMan_function.Rnw’

--- re-building ‘calcBgVol_function.Rnw’ using knitr
Error: processing vignette ‘calcBgVol_function.Rnw’ failed with diagnostics:
Running ‘texi2dvi’ on ‘calcBgVol_function.tex’ failed.
LaTeX errors:
! You can't use `macro parameter character #' in horizontal mode.
l.143 data("s3lcombo")dim(s3lcombo)#
                                    # [1] 21  4
? 
! Emergency stop.
! Emergency stop.
l.143 data("s3lcombo")dim(s3lcombo)#
                                    # [1] 21  4
End of file on the terminal!

!  ==> Fatal error occurred, no output PDF file produced!
--- failed re-building ‘calcBgVol_function.Rnw’

--- re-building ‘predBg_function.Rnw’ using knitr
Error: processing vignette ‘predBg_function.Rnw’ failed with diagnostics:
Running ‘texi2dvi’ on ‘predBg_function.tex’ failed.
LaTeX errors:
! You can't use `macro parameter character #' in horizontal mode.
l.98   predBg(form = "C6H10O5")#
                                # [1] 413.7274
? 
! Emergency stop.
! Emergency stop.
l.98   predBg(form = "C6H10O5")#
                                # [1] 413.7274
End of file on the terminal!

!  ==> Fatal error occurred, no output PDF file produced!
--- failed re-building ‘predBg_function.Rnw’

SUMMARY: processing the following files failed:
  ‘biogas_quick_start.Rnw’ ‘calcBgMan_function.Rnw’
  ‘calcBgVol_function.Rnw’ ‘predBg_function.Rnw’

Error: Vignette re-building failed.
Execution halted