The updated 1000 Genomes website no longer supports the Aspera web interface. You can continue to use aspera with the command line tool ascp. The tool itself is available from Aspera.
An example command line for ascp is:
ascp -i bin/aspera/etc/asperaweb_id_dsa.putty -Tr -Q -l 100M -L- firstname.lastname@example.org:vol1/ftp/release/20100804/ALL.2of4intersection.20100804.genotypes.vcf.gz ./
If you have any questions about Aspera or any other aspect of accessing the 1000 Genomes data, please email email@example.com.