I was using Drush version 5.3 in my remote server with no problem at all. I got it working just uploading the the tar.gz from drupal.org to the root of my server. Then I could use commands like: drush/drush cc all, drush/drush cron,... So far so good.

Now I need to update Drush, then I downloaded drush from: https://github.com/drush-ops/drush and did the same: I uploaded the drush folder to the root of my server. But when I try to run a command like drush/drush cron I get this message:

Unable to load autoload.php. Drush now requires Composer in order to install its dependencies and autoload classes. Please see README.md

What does this mean?

Browse other questions tagged or ask your own question.