Error(s) in re-building vignettes:
--- re-building ‘glmdisc.Rmd’ using rmarkdown
Iteration 1 ended with a performance of aic = -Inf
Iteration 2 ended with a performance of aic = -127.666235443137
Iteration 3 ended with a performance of aic = -121.646517411463
Iteration 4 ended with a performance of aic = -127.773446691837
Iteration 5 ended with a performance of aic = -132.728432067484
Iteration 6 ended with a performance of aic = -125.257611250637
Iteration 7 ended with a performance of aic = -124.967794757292
Iteration 8 ended with a performance of aic = -120.752963769923
Iteration 9 ended with a performance of aic = -109.380012896366
Iteration 10 ended with a performance of aic = -107.43273914472
Iteration 11 ended with a performance of aic = -109.109874519898
Iteration 12 ended with a performance of aic = -102.993485768059
Iteration 13 ended with a performance of aic = -114.054430698865
Iteration 14 ended with a performance of aic = -121.143971638521
Iteration 15 ended with a performance of aic = -117.770203289134
Iteration 16 ended with a performance of aic = -119.385670165041
Iteration 17 ended with a performance of aic = -102.634791454259
Iteration 18 ended with a performance of aic = -119.310082971472
Iteration 19 ended with a performance of aic = -105.903736646552
Iteration 20 ended with a performance of aic = -103.469918105163
Iteration 21 ended with a performance of aic = -113.675128166586
Iteration 22 ended with a performance of aic = -130.903021335084
Iteration 23 ended with a performance of aic = -132.3520067211
Iteration 24 ended with a performance of aic = -131.859244832578
Iteration 25 ended with a performance of aic = -135.045173023537
Iteration 26 ended with a performance of aic = -125.168538931958
Iteration 27 ended with a performance of aic = -128.269778912052
Iteration 28 ended with a performance of aic = -121.93756057075
Iteration 29 ended with a performance of aic = -122.347438393913
Iteration 30 ended with a performance of aic = -125.933170421285
Quitting from lines 298-301 (glmdisc.Rmd) 
Error: processing vignette 'glmdisc.Rmd' failed with diagnostics:
number of items to replace is not a multiple of replacement length
--- failed re-building ‘glmdisc.Rmd’

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

Error: Vignette re-building failed.
Execution halted