Error in re-building vignettes:
  ...
Loading required package: locfit
locfit 1.5-9.1 	 2013-03-22
Loading required package: GenomicFeatures
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 objects are masked from ‘package:stats’:

    IQR, mad, sd, var, xtabs

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

    Filter, Find, Map, Position, Reduce,
    anyDuplicated, append, as.data.frame, basename,
    cbind, colMeans, colSums, colnames, dirname,
    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, rowMeans,
    rowSums, rownames, sapply, setdiff, sort, table,
    tapply, union, unique, unsplit, which, which.max,
    which.min

Loading required package: S4Vectors
Loading required package: stats4

Attaching package: ‘S4Vectors’

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    expand.grid

Loading required package: IRanges
Loading required package: GenomeInfoDb
Loading required package: GenomicRanges
Loading required package: AnnotationDbi
Loading required package: Biobase
Welcome to Bioconductor

    Vignettes contain introductory material; view
    with 'browseVignettes()'. To cite Bioconductor,
    see 'citation("Biobase")', and for packages
    'citation("pkgname")'.

Loading required package: Rsamtools
Loading required package: Biostrings
Loading required package: XVector

Attaching package: ‘Biostrings’

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

    strsplit

Loading required package: exomePeak
Loading required package: rtracklayer
Loading required package: GenomicAlignments
Loading required package: SummarizedExperiment
Loading required package: DelayedArray
Loading required package: matrixStats

Attaching package: ‘matrixStats’

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    anyMissing, rowMedians

Loading required package: BiocParallel

Attaching package: ‘DelayedArray’

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    colMaxs, colMins, colRanges, rowMaxs, rowMins,
    rowRanges

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

    type

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

    aperm, apply

Import genomic features from the file as a GRanges object ... OK
Prepare the 'metadata' data frame ... OK
Make the TxDb object ... OK
'select()' returned 1:many mapping between keys and
columns

Error: processing vignette ‘QNB-Overview.Rnw’ failed with diagnostics:
 chunk 7 (label = The complete processing flow) 
Error in makeTxDbFromUCSC(genome = "hg19") : 
  Couldn't load the RMariaDB package. You need to
  install the RMariaDB package in order to use
  makeTxDbFromUCSC().
Execution halted