Hi,

I wanted to get some exon information for specific genes. I wanted to use the hg17 build, since my SNP data is based on that. The code that I use is:
-------------------------------------
library(biomaRt)
 entrezid <- "8334"
 martx <- "ensembl_mart_49"  

 ensembl <- useMart(biomart=martx,dataset="hsapiens_gene_ensembl",
                    archive=TRUE)     ### "ensembl_mart_49" hg17 for wtccc           
    zz <- getBM(attr = c("entrezgene","exon_stable_id",
                "exon_chrom_start","exon_chrom_end"),
                filters="with_entrezgene",
                 values = entrezid,mart = ensembl) 


------------------------------------
However, I get the following error:
Error in listFilters(mart, what = "type") : 
  The function argument 'what' contains an invalid value: type
Valid are: name, description, options, fullDescription, filters5, filters6

I checked with listFilters(ensembl) and ?getBM, and the filters appear to be ok. What am I doing wrong?
thanks!
My sessionInfo():
R version 2.10.0 (2009-10-26) 
i386-pc-mingw32 

locale:
[1] LC_COLLATE=English_United States.1252 
[2] LC_CTYPE=English_United States.1252   
[3] LC_MONETARY=English_United States.1252
[4] LC_NUMERIC=C                          
[5] LC_TIME=English_United States.1252    

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

other attached packages:
 [1] GOstats_2.12.0      graph_1.24.1        Category_2.12.0    
 [4] GO.db_2.3.5         multtest_2.2.0      XML_2.6-0          
 [7] hgu133a.db_2.3.5    org.Hs.eg.db_2.3.6  RSQLite_0.7-3     
[10] AnnotationDbi_1.8.0 GEOquery_2.8.0      RCurl_1.2-1        
[13] bitops_1.0-4.1      biomaRt_2.2.0       DBI_0.2-4          
[16] RColorBrewer_1.0-2  genefilter_1.28.0   affy_1.24.1        
[19] Biobase_2.6.0      

loaded via a namespace (and not attached):
 [1] affyio_1.14.0        annotate_1.24.0     
 [3] GSEABase_1.8.0       MASS_7.3-3          
 [5] preprocessCore_1.8.0 RBGL_1.20.0         
 [7] splines_2.10.0       survival_2.35-7     
 [9] tools_2.10.0         xtable_1.5-6        
>


      
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