Error(s) in re-building vignettes:
--- re-building ‘CalibrationCurves.Rmd’ using rmarkdown
** Processing: /data/gannet/ripley/R/packages/tests-devel/CalibrationCurves.Rcheck/vign_test/CalibrationCurves/vignettes/CalibrationCurves_files/figure-html/unnamed-chunk-6-1.png
1344x960 pixels, 3x8 bits/pixel, RGB
Input IDAT size = 90620 bytes
Input file size = 90830 bytes

Trying:
  zc = 9  zm = 8  zs = 0  f = 0		IDAT size = 72129
  zc = 9  zm = 8  zs = 1  f = 0
  zc = 1  zm = 8  zs = 2  f = 0
  zc = 9  zm = 8  zs = 3  f = 0
  zc = 9  zm = 8  zs = 0  f = 5
  zc = 9  zm = 8  zs = 1  f = 5
  zc = 1  zm = 8  zs = 2  f = 5
  zc = 9  zm = 8  zs = 3  f = 5
                               
Selecting parameters:
  zc = 9  zm = 8  zs = 0  f = 0		IDAT size = 72129

Output IDAT size = 72129 bytes (18491 bytes decrease)
Output file size = 72207 bytes (18623 bytes = 20.50% decrease)

** Processing: /data/gannet/ripley/R/packages/tests-devel/CalibrationCurves.Rcheck/vign_test/CalibrationCurves/vignettes/CalibrationCurves_files/figure-html/unnamed-chunk-9-1.png
1344x960 pixels, 8 bits/pixel, 256 colors in palette
Reducing image to 8 bits/pixel, grayscale
Input IDAT size = 24253 bytes
Input file size = 25135 bytes

Trying:
  zc = 9  zm = 8  zs = 0  f = 0		IDAT size = 20464
  zc = 9  zm = 8  zs = 1  f = 0
  zc = 1  zm = 8  zs = 2  f = 0
  zc = 9  zm = 8  zs = 3  f = 0
  zc = 9  zm = 8  zs = 0  f = 5
  zc = 9  zm = 8  zs = 1  f = 5
  zc = 1  zm = 8  zs = 2  f = 5
  zc = 9  zm = 8  zs = 3  f = 5
                               
Selecting parameters:
  zc = 9  zm = 8  zs = 0  f = 0		IDAT size = 20464

Output IDAT size = 20464 bytes (3789 bytes decrease)
Output file size = 20542 bytes (4593 bytes = 18.27% decrease)


Quitting from lines 206-207 [unnamed-chunk-10] (CalibrationCurves.Rmd)
Error: processing vignette 'CalibrationCurves.Rmd' failed with diagnostics:
Nk = 3 led to estimation problems.
--- failed re-building ‘CalibrationCurves.Rmd’

SUMMARY: processing the following file failed:
  ‘CalibrationCurves.Rmd’

Error: Vignette re-building failed.
Execution halted