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 = -125.454024405272
Iteration 3 ended with a performance of aic = -118.460425870843
Iteration 4 ended with a performance of aic = -118.101152923751
Iteration 5 ended with a performance of aic = -125.457987576819
Iteration 6 ended with a performance of aic = -127.802791444122
Iteration 7 ended with a performance of aic = -145.67645167053
Iteration 8 ended with a performance of aic = -144.272870373336
Iteration 9 ended with a performance of aic = -142.627591960746
Iteration 10 ended with a performance of aic = -126.319270893378
Iteration 11 ended with a performance of aic = -118.994442813628
Iteration 12 ended with a performance of aic = -117.970018406262
Iteration 13 ended with a performance of aic = -129.018126330912
Iteration 14 ended with a performance of aic = -135.933331603185
Iteration 15 ended with a performance of aic = -136.837992635002
Iteration 16 ended with a performance of aic = -130.565097745462
Iteration 17 ended with a performance of aic = -129.587674188843
Iteration 18 ended with a performance of aic = -119.380488683318
Iteration 19 ended with a performance of aic = -136.963737202468
Iteration 20 ended with a performance of aic = -143.134025871513
Iteration 21 ended with a performance of aic = -130.53975498466
Iteration 22 ended with a performance of aic = -130.42738776056
Iteration 23 ended with a performance of aic = -131.324334382726
Iteration 24 ended with a performance of aic = -125.995845092586
Iteration 25 ended with a performance of aic = -136.067687245999
Iteration 26 ended with a performance of aic = -133.902907909476
Iteration 27 ended with a performance of aic = -137.099579256626
Iteration 28 ended with a performance of aic = -126.455745922572
Iteration 29 ended with a performance of aic = -124.783615125105
Iteration 30 ended with a performance of aic = -118.994442813628
Iteration 31 ended with a performance of aic = -143.623277049966
Iteration 32 ended with a performance of aic = -138.350075491906
Iteration 33 ended with a performance of aic = -139.250227305561
Iteration 34 ended with a performance of aic = -138.596535255918
Iteration 35 ended with a performance of aic = -140.021025119766
Iteration 36 ended with a performance of aic = -141.553975212955
Iteration 37 ended with a performance of aic = -137.067667124065
Iteration 38 ended with a performance of aic = -138.537445091907
Iteration 39 ended with a performance of aic = -136.39832114779
Iteration 40 ended with a performance of aic = -136.801504387106
Iteration 41 ended with a performance of aic = -135.672040703099
Iteration 42 ended with a performance of aic = -140.357433512986
Iteration 43 ended with a performance of aic = -140.070941523131
Iteration 44 ended with a performance of aic = -117.917103377725
Iteration 45 ended with a performance of aic = -118.765947186098
Iteration 46 ended with a performance of aic = -135.678904270495
Iteration 47 ended with a performance of aic = -133.124345483675
Iteration 48 ended with a performance of aic = -134.447692930083
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