[BioC] problem getting biotype in biomaRt

[Elizabeth Purdom]

Hi,
I am trying to pull down information from Ensembl using biomaRt and I 
can't get the relevant biotype information (for Human). The old 
'biotype' attribute doesn't exist, so what I see is 'gene_biotype' and 
'structure_biotype'. I have no idea what the difference is, but I can't 
get either one. The error says it's probably an internal error to be 
reported, but I also get this when I try to bring down what I think are 
incompatible attributes.
Thanks,
Elizabeth

 > library(biomaRt)
 > mart<-useMart("ensembl",dataset= "hsapiens_gene_ensembl")
Checking attributes and filters ... ok
 > martAttr<-listAttributes(mart)
 > att<-c("ensembl_gene_id",
+                 "ensembl_transcript_id",
+                 "ensembl_exon_id",
+                  "exon_chrom_start",
+                  "exon_chrom_end",
+                  "strand",
+                  "chromosome_name",
+                  "rank",
+                  "3_utr_start","3_utr_end",
+                  "5_utr_start","5_utr_end"
+                  )
 > all(att%in%martAttr[,1]) #valid names for the mart
[1] TRUE
#works fine here
 > tempGene <- 
getBM(att,filter="ensembl_gene_id",value="ENSG00000187634",mart = mart)
#error
 > tempGene <- 
getBM(c(att,"gene_biotype"),filter="ensembl_gene_id",value="ENSG00000187634",mart 
= mart)
 
                                 V1
1 Query ERROR: caught BioMart::Exception::Usage: Attributes from 
multiple attribute pages are not allowed
Error in getBM(c(att, "gene_biotype"), filter = "ensembl_gene_id", value 
= "ENSG00000187634",  :
   Number of columns in the query result doesn't equal number of 
attributes in query.  This is probably an internal error, please report.
#again an error
 > tempGene <- 
getBM(c(att,"structure_biotype"),filter="ensembl_gene_id",value="ENSG00000187634",mart 
= mart)
 
    V1
1 Query ERROR: caught BioMart::Exception::Usage: Attribute biotype NOT FOUND
Error in getBM(c(att, "structure_biotype"), filter = "ensembl_gene_id",  :
   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 2.8.1 (2008-12-22)
i386-pc-mingw32

locale:
LC_COLLATE=English_United States.1252;LC_CTYPE=English_United 
States.1252;LC_MONETARY=English_United 
States.1252;LC_NUMERIC=C;LC_TIME=English_United States.1252

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_0.93-0 tools_2.8.1  XML_1.99-0