Error in re-building vignettes:
  ...
Loading required package: NanoStringNorm
Loading required package: gdata
gdata: read.xls support for 'XLS'
gdata: (Excel 97-2004) files
gdata: ENABLED.

gdata: Unable to load perl libaries
gdata: needed by read.xls()
gdata: to support 'XLSX' (Excel
gdata: 2007+) files.

gdata: Run the function
gdata: 'installXLSXsupport()'
gdata: to automatically download
gdata: and install the perl
gdata: libaries needed to support
gdata: Excel XLS and XLSX formats.

Attaching package: ‘gdata’

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

    nobs

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

    object.size

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

    startsWith

Loading required package: vsn
Loading required package: Biobase
Loading required package: BiocGenerics
Loading required package: parallel

Attaching package: ‘BiocGenerics’

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

    clusterApply, clusterApplyLB,
    clusterCall, clusterEvalQ,
    clusterExport, clusterMap,
    parApply, parCapply, parLapply,
    parLapplyLB, parRapply,
    parSapply, parSapplyLB

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

    combine

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

    IQR, mad, xtabs

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

    Filter, Find, Map, Position,
    Reduce, anyDuplicated, append,
    as.data.frame, cbind, colnames,
    do.call, duplicated, eval,
    evalq, get, grep, grepl,
    intersect, is.unsorted, lapply,
    lengths, mapply, match, mget,
    order, paste, pmax, pmax.int,
    pmin, pmin.int, rank, rbind,
    rownames, sapply, setdiff,
    sort, table, tapply, union,
    unique, unsplit, which,
    which.max, which.min


  Running 'texi2dvi' on 'NanoStringNorm_Introduction.tex' failed.
LaTeX errors:
! Emergency stop.
<*> ... \relax>\expandafter\egroup\the\toks0\relax
                                                  
*** (job aborted, no legal \end found)

!  ==> Fatal error occurred, no output PDF file produced!
Calls: buildVignettes -> texi2pdf -> texi2dvi
Execution halted