Drush make: "Found makefile: myfile.make. Aborting"
Have you tried this recently?  It's hard to tell from the info you posted above, but your problem could very well have been caused by the ssl certificate problem on updates.drupal.org.  Since sometime yesterday until a few hours ago, https connections to updates.drupal.org were failing due to a limitation of the new CDN they are using now.  This caused drush dl and drush make to fail.  (n.b. Drush caches update information, so things likely continued to work from the cache on systems that were working before the cert problem started.)

The drupal.org team has things patched up now, so try doing everything again from the beginning, and see if it starts working again.  If that does not clear up the problem, try running drush make again with the --debug option, and post the results.