Error in re-building vignettes:
  ...
File parsing ... 1499 rows processed
Attribute splitting ... 2998 pairs processed
Attribute sorting ... 2 tags found
Attribute binding ...
done
Warning in object$check(warn = warn) : 'organism' should not be NA
Warning in object$check(warn = warn) : 'assembly' should not be NA
Warning in track.table(hsGenes) : 'strand' column converted to factor
Warning in drawable.check(warn = warn) : 'name' should not be NA
Warning in object$check(warn = warn) : 'organism' should not be NA
Warning in object$check(warn = warn) : 'assembly' should not be NA
Parsing reference #1 (0 bins)
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Parsing reference #11 (14 bins)
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Parsing reference #24 (0 bins)
Warning in track.table(hsGenes) : 'strand' column converted to factor
Warning in drawable.check(warn = warn) : 'name' should not be NA
Warning in object$check(warn = warn) : 'organism' should not be NA
Warning in object$check(warn = warn) : 'assembly' should not be NA
Warning in track.table(hsGenes) : 'strand' column converted to factor
Warning in drawable.check(warn = warn) : 'name' should not be NA
Warning in object$check(warn = warn) : 'organism' should not be NA
Warning in object$check(warn = warn) : 'assembly' should not be NA
Warning in track.table(hsGenes) : 'strand' column converted to factor
Warning in drawable.check(warn = warn) : 'name' should not be NA
Warning in object$check(warn = warn) : 'organism' should not be NA
Warning in object$check(warn = warn) : 'assembly' should not be NA
Warning in track.table(hsGenes) : 'strand' column converted to factor
Warning in drawable.check(warn = warn) : 'name' should not be NA
Warning in object$check(warn = warn) : 'organism' should not be NA
Warning in object$check(warn = warn) : 'assembly' should not be NA
Warning in track.table(name = letters[1:5], chrom = 1:5, strand = "+", start = 1:5,  :
  'strand' column converted to factor
Warning in track.table(name = letters[1:5], chrom = 1:5, strand = "+", start = 1:5,  :
  'chrom' column converted to factor
Warning in drawable.check(warn = warn) : 'name' should not be NA
Warning in object$check(warn = warn) : 'organism' should not be NA
Warning in object$check(warn = warn) : 'assembly' should not be NA
Parsing reference #1 (0 bins)
Parsing reference #2 (0 bins)
Parsing reference #3 (0 bins)
Parsing reference #4 (0 bins)
Parsing reference #5 (0 bins)
Parsing reference #6 (0 bins)
Parsing reference #7 (0 bins)
Parsing reference #8 (0 bins)
Parsing reference #9 (0 bins)
Parsing reference #10 (0 bins)
Parsing reference #11 (14 bins)
Parsing reference #12 (0 bins)
Parsing reference #13 (0 bins)
Parsing reference #14 (0 bins)
Parsing reference #15 (0 bins)
Parsing reference #16 (0 bins)
Parsing reference #17 (0 bins)
Parsing reference #18 (0 bins)
Parsing reference #19 (0 bins)
Parsing reference #20 (0 bins)
Parsing reference #21 (0 bins)
Parsing reference #22 (0 bins)
Parsing reference #23 (0 bins)
Parsing reference #24 (0 bins)
Warning in track.table(...) : 'chrom' column converted to factor
Warning in track.table(...) : 'chrom' column converted to factor
File parsing ... 1499 rows processed
Attribute splitting ... 2998 pairs processed
Attribute sorting ... 2 tags found
Attribute binding ...
done

Error: processing vignette ‘Howto.Rtex’ failed with diagnostics:
 chunk 47 
Error in `[<-.data.frame`(`*tmp*`, boxes$strand == "-" & start.i > 1L,  : 
  replacement has 1 row, data has 0
Execution halted