"nativecode=1060 ** Duplicate column name 'created_id'" when upgrading from 4.4.14 to 4.6.2
That looks very strange error, it appears to be complaining that the created_id column is being created twice, However looking through the upgrade sql files on the github repo, I can only see the one reference to creating created_id column on that table and that is in the 4.6alpha7.sql file. I do note that it came from this JIRA case https://issues.civicrm.org/jira/browse/CRM-15970. Perhaps you should raise it as a bug in the Jira system but also would recommend looking through the upgrade sql files on your system to see if they match what is in the git repo