[BioC] DEXseq error on estimatelog2FoldChanges

[Fabrice Tourre]

Dear expert,

When I use DEXSeq to find different expressed exon, I got this error.
In my analysis, I only have two samples, one is case, one is control.

ecs <- estimatelog2FoldChanges( ecs )
Error in `row.names<-.data.frame`(`*tmp*`, value = c("geneID", "exonID",  :
  duplicate 'row.names' are not allowed
In addition: There were 50 or more warnings (use warnings() to see the first 50)


warnings()
Warning messages:
1: In chol.default(XVX + lambda * I, pivot = TRUE) :
  the matrix is either rank-deficient or indefinite



sessionInfo()
R version 3.0.0 (2013-04-03)
Platform: x86_64-unknown-linux-gnu (64-bit)

locale:
 [1] LC_CTYPE=en_US.UTF-8       LC_NUMERIC=C
 [3] LC_TIME=en_US.UTF-8        LC_COLLATE=en_US.UTF-8
 [5] LC_MONETARY=en_US.UTF-8    LC_MESSAGES=en_US.UTF-8
 [7] LC_PAPER=C                 LC_NAME=C
 [9] LC_ADDRESS=C               LC_TELEPHONE=C
[11] LC_MEASUREMENT=en_US.UTF-8 LC_IDENTIFICATION=C

attached base packages:
[1] parallel  stats     graphics  grDevices utils     datasets  methods
[8] base

other attached packages:
[1] DEXSeq_1.8.0       Biobase_2.22.0     BiocGenerics_0.8.0

loaded via a namespace (and not attached):
 [1] biomaRt_2.18.0       Biostrings_2.30.1    bitops_1.0-6
 [4] GenomicRanges_1.14.4 hwriter_1.3          IRanges_1.20.6
 [7] RCurl_1.95-4.1       Rsamtools_1.14.2     statmod_1.4.18
[10] stats4_3.0.0         stringr_0.6.2        XML_3.98-1.1
[13] XVector_0.2.0        zlibbioc_1.8.0