Hello,

I followed the biomaRt tutorial but encountered the server problem.

There is no problem with the useMart() function.

human = useMart("ensembl", dataset = "hsapiens_gene_ensembl")
rat = useMart("ensembl", dataset = "rnorvegicus_gene_ensembl")

But when I use getLDS(), the problem occurred:

getLDS(attributes = c("hgnc_symbol","chromosome_name", "start_position"),
       filters = "hgnc_symbol", values = "MIF", mart = human,
       attributesL = c("refseq_mrna","chromosome_name","start_position"), martL = rat)

Error: biomaRt has encountered an unexpected server error.
Consider trying one of the Ensembl mirrors (for more details look at ?useEnsembl)

Does anyone know how to solve this problem? Many thanks!