conversion between entrezgene to uniprot_gn_id

[sunyi000]

I'm trying to convert entrezgene id to uniprot_gn_id, but if I include any one of these "uniprot_gn_id, uniprot_gn_symbol" in the query attributes, my query hangs, it is running forever.

the query runs fine if no uniprot attributes are include.

server: http://ensembl.org mart: ENSEMBL_MART_ENSEMBL dataset: hsapiens_gene_ensembl

could anyone help me here, or let me know if there's any alternative ways to do the conversion from entrezgene to uniprotid?

thanks