[BioC] BiomaRt error

[Aedin Culhane]

I am getting a biomaRt error. it works last night, but is failing today.

 > library(biomaRt)
 > example(getBM)

getBM> if(interactive()){
getBM+ mart <- useMart("ensembl")
getBM+ datasets <- listDatasets(mart)
getBM+ mart<-useDataset("hsapiens_gene_ensembl",mart)
getBM+ 
getBM(attributes=c("affy_hg_u95av2","hgnc_symbol","chromosome_name","band"),filters="affy_hg_u95av2",values=c("1939_at","1503_at","1454_at"), 
mart=mart)
getBM+
getBM+ }
Checking attributes and filters ... ok
                                                                                                                                                                                 
V1
1 Query ERROR: caught BioMart::Exception::Database: Error during query 
execution: Can't find file: 
'./ensembl_mart_55/hsapiens_gene_ensembl__ox_AFFY_HG_U95Av2__dm.frm' 
(errno: 13)
Error in getBM(attributes = c("affy_hg_u95av2", "hgnc_symbol", 
"chromosome_name",  :
  Number of columns in the query result doesn't equal number of 
attributes in query.  This is probably an internal error, please report.

 > sessionInfo()
R version 2.9.0 (2009-04-17)
i486-pc-linux-gnu

locale:
LC_CTYPE=en_US.UTF-8;LC_NUMERIC=C;LC_TIME=en_US.UTF-8;LC_COLLATE=en_US.UTF-8;LC_MONETARY=C;LC_MESSAGES=en_US.UTF-8;LC_PAPER=en_US.UTF-8;LC_NAME=C;LC_ADDRESS=C;LC_TELEPHONE=C;LC_MEASUREMENT=en_US.UTF-8;LC_IDENTIFICATION=C

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

other attached packages:
[1] biomaRt_1.16.0

loaded via a namespace (and not attached):
[1] RCurl_0.94-1 XML_1.93-2

-- 
Aedín Culhane,
Research Associate
Computational Biology and Functional Genomics Laboratory
Harvard School of Public Health, Dana-Farber Cancer Institute

44 Binney Street, SM822C
Department of Biostatistics and Computational Biology,
Dana-Farber Cancer Institute
Boston, MA 02115
USA

Phone: +1 (617) 632 2468
Fax:   +1 (617) 582 7760
Email: aedin at jimmy.harvard.edu
Web URL: http://www.hsph.harvard.edu/research/aedin-culhane/