Error in re-building vignettes:
  ...
Iteration 1 ended with a performance of aic = -Inf
Iteration 2 ended with a performance of aic = -140.426490580924
Iteration 3 ended with a performance of aic = -129.317656712562
Iteration 4 ended with a performance of aic = -140.602680802052
Iteration 5 ended with a performance of aic = -141.482335397256
Iteration 6 ended with a performance of aic = -121.989215169986
Iteration 7 ended with a performance of aic = -118.272559249272
Iteration 8 ended with a performance of aic = -118.121249330925
Iteration 9 ended with a performance of aic = -126.008803821728
Iteration 10 ended with a performance of aic = -145.0482317251
Iteration 11 ended with a performance of aic = -136.584453972548
Iteration 12 ended with a performance of aic = -125.958811054061
Iteration 13 ended with a performance of aic = -129.835726917717
Iteration 14 ended with a performance of aic = -119.404496541432
Iteration 15 ended with a performance of aic = -126.999720198768
Iteration 16 ended with a performance of aic = -137.953888421331
Iteration 17 ended with a performance of aic = -136.045452392816
Iteration 18 ended with a performance of aic = -138.469081348756
Iteration 19 ended with a performance of aic = -145.172365840738
Iteration 20 ended with a performance of aic = -133.438083134105
Iteration 21 ended with a performance of aic = -130.030171466877
Iteration 22 ended with a performance of aic = -119.633908113901
Iteration 23 ended with a performance of aic = -130.480532109707
Iteration 24 ended with a performance of aic = -129.242246931172
Iteration 25 ended with a performance of aic = -140.405359398071
Iteration 26 ended with a performance of aic = -122.404593655903
Iteration 27 ended with a performance of aic = -136.324044254101
Iteration 28 ended with a performance of aic = -130.136378601126
Iteration 29 ended with a performance of aic = -132.371426075246
Iteration 30 ended with a performance of aic = -139.359692034398
Iteration 31 ended with a performance of aic = -136.067263647434
Iteration 32 ended with a performance of aic = -134.532075937367
Iteration 33 ended with a performance of aic = -141.909963872062
Iteration 34 ended with a performance of aic = -139.561365914206
Iteration 35 ended with a performance of aic = -146.901155995279
Iteration 36 ended with a performance of aic = -145.907822787114
Iteration 37 ended with a performance of aic = -139.681159904428
Iteration 38 ended with a performance of aic = -142.563492121741
Iteration 39 ended with a performance of aic = -148.814783098581
Iteration 40 ended with a performance of aic = -148.257861155309
Iteration 41 ended with a performance of aic = -136.455935916454
Iteration 42 ended with a performance of aic = -137.410077587408
Iteration 43 ended with a performance of aic = -140.679573220889
Iteration 44 ended with a performance of aic = -126.767095911045
Iteration 45 ended with a performance of aic = -132.864082110346
Iteration 46 ended with a performance of aic = -126.316978201692
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
Execution halted