Error(s) in re-building vignettes:
  ...
--- re-building ‘sandwich-CL.Rnw’ using Sweave
Loading required package: geepack
Loading required package: lattice
Loading required package: lme4
Loading required package: Matrix
Loading required package: lmtest
Loading required package: zoo

Attaching package: ‘zoo’

The following objects are masked from ‘package:base’:

    as.Date, as.Date.numeric

Loading required package: multiwayvcov
Loading required package: pcse

Attaching package: ‘pcse’

The following object is masked from ‘package:sandwich’:

    vcovPC

Loading required package: plm
Loading required package: pscl
Classes and Methods for R originally developed in the
Political Science Computational Laboratory
Department of Political Science
Stanford University (2002-2015),
by and under the direction of Simon Jackman.
hurdle and zeroinfl functions by Achim Zeileis.
--- finished re-building ‘sandwich-CL.Rnw’

--- re-building ‘sandwich-OOP.Rnw’ using Sweave
Loading required package: AER
Loading required package: car
Loading required package: carData
Loading required package: lmtest
Loading required package: zoo

Attaching package: ‘zoo’

The following objects are masked from ‘package:base’:

    as.Date, as.Date.numeric

Loading required package: sandwich
Loading required package: survival
Loading required package: MASS
--- finished re-building ‘sandwich-OOP.Rnw’

--- re-building ‘sandwich.Rnw’ using Sweave

Attaching package: ‘zoo’

The following objects are masked from ‘package:base’:

    as.Date, as.Date.numeric

Loading required package: strucchange
Loading required package: lmtest
Loading required package: scatterplot3d
Error in ar.ols(x, aic = aic, order.max = order.max, na.action = na.action,  : 
  non-conformable arguments

Error: processing vignette 'sandwich.Rnw' failed with diagnostics:
 chunk 16 (label = sc-ocus) 
Error in meatHAC(x, order.by = order.by, prewhite = prewhite, weights = weights,  : 
  VAR(1) prewhitening of estimating functions failed

--- failed re-building ‘sandwich.Rnw’

SUMMARY: processing the following file failed:
  ‘sandwich.Rnw’

Error: Vignette re-building failed.
Execution halted