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 = -132.934516105478
Iteration 3 ended with a performance of aic = -137.440146022518
Iteration 4 ended with a performance of aic = -121.456922729943
Iteration 5 ended with a performance of aic = -125.633044354935
Iteration 6 ended with a performance of aic = -121.616497839547
Iteration 7 ended with a performance of aic = -125.073397173037
Iteration 8 ended with a performance of aic = -136.351912908437
Iteration 9 ended with a performance of aic = -138.018822191398
Iteration 10 ended with a performance of aic = -144.37329184157
Iteration 11 ended with a performance of aic = -128.595084740752
Iteration 12 ended with a performance of aic = -141.365461468717
Iteration 13 ended with a performance of aic = -137.577967025605
Iteration 14 ended with a performance of aic = -133.829367400103
Iteration 15 ended with a performance of aic = -136.735624838845
Iteration 16 ended with a performance of aic = -137.761450858809
Iteration 17 ended with a performance of aic = -127.64641162718
Iteration 18 ended with a performance of aic = -131.444033079227
Iteration 19 ended with a performance of aic = -130.414845416097
Iteration 20 ended with a performance of aic = -126.230533182095
Iteration 21 ended with a performance of aic = -133.721953049934
Iteration 22 ended with a performance of aic = -132.891496373522
Iteration 23 ended with a performance of aic = -132.075008187187
Iteration 24 ended with a performance of aic = -132.64644474972
Iteration 25 ended with a performance of aic = -134.312398084004
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