Error(s) in re-building vignettes:
--- re-building ‘Tides.Rnw’ using Sweave
Loading required package: Tides
Warning in gapsts(dry$time, dtMax, unit = unit, shiftbegin = TRUE) :
  First data point is beginning of gap. To shift t0, dt is estimated from next continuous series
Warning in gapsts(dry$time, dtMax, unit = unit, shiftbegin = TRUE) :
  First data point is beginning of gap. To shift t0, dt is estimated from next continuous series
Warning in gapsts(wet$time, dtMax, unit = unit, shiftbegin = TRUE) :
  First data point is beginning of gap. To shift t0, dt is estimated from next continuous series
Warning in gapsts(wet$time, dtMax, unit = unit, shiftbegin = TRUE) :
  First data point is beginning of gap. To shift t0, dt is estimated from next continuous series
Error: processing vignette 'Tides.Rnw' failed with diagnostics:
Running 'texi2dvi' on 'Tides.tex' failed.
LaTeX errors:
! Package xcolor Error: Undefined color `Blue'.

See the xcolor package documentation for explanation.
Type  H <return>  for immediate help.
 ...                                              
! Package xcolor Error: Undefined color `Blue'.

See the xcolor package documentation for explanation.
Type  H <return>  for immediate help.
 ...                                              
! Package xcolor Error: Undefined color `Blue'.

See the xcolor package documentation for explanation.
Type  H <return>  for immediate help.
 ...                                              
! Package xcolor Error: Undefined color `Blue'.

See the xcolor package documentation for explanation.
Type  H <return>  for immediate help.
 ...                                              
! Package xcolor Error: Undefined color `Blue'.

See the xcolor package documentation for explanation.
Type  H <return>  for immediate help.
 ...                                              
! Package xcolor Error: Undefined color `Blue'.

See the xcolor package documentation for explanation.
Type  H <return>  for immediate help.
 ...                                              
! Package xcolor Error: Undefined color `Blue'.

See the xcolor package documentation for explanation.
Type  H <return>  for immediate help.
 ...                                              
! Package xcolor Error: Undefined color `Blue'.

See the xcolor package documentation for explanation.
Type  H <return>  for immediate help.
 ...                                              
! Package xcolor Error: Undefined color `Blue'.

See the xcolor package documentation for explanation.
Type  H <return>  for immediate help.
 ...                                              
! Package xcolor Error: Undefined color `Blue'.

See the xcolor package documentation for explanation.
Type  H <return>  for immediate help.
 ...                                              
! Package xcolor Error: Undefined color `Blue'.

See the xcolor package documentation for explanation.
Type  H <return>  for immediate help.
 ...                                              
--- failed re-building ‘Tides.Rnw’

SUMMARY: processing the following file failed:
  ‘Tides.Rnw’

Error: Vignette re-building failed.
Execution halted