Error(s) in re-building vignettes:
  ...
--- re-building ‘predicting-effects.Rmd’ using rmarkdown
** Processing: /home/hornik/tmp/R.check/r-devel-gcc/Work/PKGS/semEff.Rcheck/vign_test/semEff/vignettes/predicting-effects_files/figure-html/unnamed-chunk-10-1.png
288x288 pixels, 3x8 bits/pixel, RGB
Input IDAT size = 35492 bytes
Input file size = 35618 bytes

Trying:
  zc = 9  zm = 8  zs = 0  f = 0		IDAT size = 28405
  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 = 28405

Output IDAT size = 28405 bytes (7087 bytes decrease)
Output file size = 28483 bytes (7135 bytes = 20.03% decrease)

** Processing: /home/hornik/tmp/R.check/r-devel-gcc/Work/PKGS/semEff.Rcheck/vign_test/semEff/vignettes/predicting-effects_files/figure-html/unnamed-chunk-11-1.png
288x288 pixels, 3x8 bits/pixel, RGB
Input IDAT size = 33447 bytes
Input file size = 33573 bytes

Trying:
  zc = 9  zm = 8  zs = 0  f = 0		IDAT size = 26423
  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 = 26423

Output IDAT size = 26423 bytes (7024 bytes decrease)
Output file size = 26501 bytes (7072 bytes = 21.06% decrease)

--- finished re-building ‘predicting-effects.Rmd’

--- re-building ‘semEff.Rmd’ using rmarkdown

Quitting from lines 23-26 [unnamed-chunk-1] (semEff.Rmd)
Error: processing vignette 'semEff.Rmd' failed with diagnostics:
there is no package called 'piecewiseSEM'
--- failed re-building ‘semEff.Rmd’

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

Error: Vignette re-building failed.
Execution halted