# Revision history [back]

This is usually a temporary issue, and happens when you download packages at the same time that a repository sync is happening. It should go away if you try again a few minutes later.

Are you using an HTTP proxy?

This is usually a temporary issue, and happens when you download packages at the same time that a repository sync is happening. It should go away if you try again a few minutes later.

Are you using an HTTP proxy?

Update

This error means that the checksum on the Packages file ( http://packages.ros.org/ros/ubuntu/dists/trusty/main/binary-amd64/Packages ) doesn't match the checksum that is listed in the Release file ( http://packages.ros.org/ros/ubuntu/dists/trusty/Release ). I guess you could download both files and try to manually verify the checksums.

This is usually a temporary issue, and happens when you download packages at the same time that a repository sync is happening. It should go away if you try again a few minutes later.

Are you using an HTTP proxy?

Update

This error means that the checksum on the Packages file ( http://packages.ros.org/ros/ubuntu/dists/trusty/main/binary-amd64/Packages ) doesn't match the checksum that is listed in the Release file ( http://packages.ros.org/ros/ubuntu/dists/trusty/Release ). I guess you could download both files and try to manually verify the checksums.

When I compute the checksums on the Packages file, I get:

$wget http://packages.ros.org/ros/ubuntu/dists/trusty/main/binary-amd64/Packages$ sha1sum Packages
$md5sum Packages e8f069b226d4fa7155e90ef02f3235ec Packages  And these match the checksums listed in the Release file. This is usually a temporary issue, and happens when you download packages at the same time that a repository sync is happening. It should go away if you try again a few minutes later. Are you using an HTTP proxy? Update This error means that the checksum on the Packages file ( http://packages.ros.org/ros/ubuntu/dists/trusty/main/binary-amd64/Packages ) doesn't match the checksum that is listed in the Release file ( http://packages.ros.org/ros/ubuntu/dists/trusty/Release ). I guess you could download both files and try to manually verify the checksums. When I compute the checksums on the Packages file, I get: $ wget http://packages.ros.org/ros/ubuntu/dists/trusty/main/binary-amd64/Packages
$sha1sum Packages 058296435aba9ad217d436d338c9a19a37e0df74 Packages$ md5sum Packages