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 = -114.816062117413
Iteration 3 ended with a performance of aic = -113.088724204968
Iteration 4 ended with a performance of aic = -134.290980516122
Iteration 5 ended with a performance of aic = -117.640853328482
Iteration 6 ended with a performance of aic = -125.624258058582
Iteration 7 ended with a performance of aic = -132.176605878164
Iteration 8 ended with a performance of aic = -111.021156448809
Iteration 9 ended with a performance of aic = -93.2621407254703
Iteration 10 ended with a performance of aic = -116.805247494295
Iteration 11 ended with a performance of aic = -124.370546545322
Iteration 12 ended with a performance of aic = -130.513936558634
Iteration 13 ended with a performance of aic = -132.274161806275
Iteration 14 ended with a performance of aic = -128.104323425078
Iteration 15 ended with a performance of aic = -122.59754741486
Iteration 16 ended with a performance of aic = -132.041153241358
Iteration 17 ended with a performance of aic = -108.574725402805
Iteration 18 ended with a performance of aic = -123.009316579826
Iteration 19 ended with a performance of aic = -136.715445813241
Iteration 20 ended with a performance of aic = -129.709609618778
Iteration 21 ended with a performance of aic = -132.077107886054
Iteration 22 ended with a performance of aic = -135.237809046034
Iteration 23 ended with a performance of aic = -133.474341793914
Iteration 24 ended with a performance of aic = -110.268492425105
Iteration 25 ended with a performance of aic = -131.943838516844
Iteration 26 ended with a performance of aic = -130.583649290901
Iteration 27 ended with a performance of aic = -137.936454192895
Iteration 28 ended with a performance of aic = -143.64826649909
Iteration 29 ended with a performance of aic = -141.20423468613
Iteration 30 ended with a performance of aic = -140.658616222675
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