Probles upgrading Aegir 0.4 from alpha3 to alpha5

Hi

I am having problems upgrading Aegir, from alpha3 to alpha5, I get to download the right version of provision & drush make following these steps:
http://git.aegirproject.org/?p=hostmaster.git;a=blob_plain;f=UPGRADE.txt...

But when I execute the hostmaster-migrate command, I get a lot of errors, my alpha3 site (drupal 6.14) gets offline and the updated one (hostmaster-HEAD) has no settings.php file so the upgrade does not finish.

I'm attaching a file with the log of the upgrade (with debug option), but the first errors I get are these:

Executing hosting_update_6000 [218.01 sec, 4.64 MB]                                                                                                                                                                              [success]
Executing hosting_update_6001 [218.01 sec, 4.64 MB]                                                                                                                                                                              [success]
Executing hosting_update_6002 [218.01 sec, 4.64 MB]                                                                                                                                                                              [success]
WD php: Unknown column 'delta' in 'field list'                                                                                                                                                                                   [error]
query: SELECT task_type, executed, delta, rid, task_status FROM hosting_task WHERE vid = 13 in /var/aegir/hostmaster-HEAD/profiles/hostmaster/modules/hosting/task/hosting_task.module on line 431. [218.01 sec, 4.64 MB]
WD php: Unknown column 'delta' in 'field list'                                                                                                                                                                                   [error]
query: INSERT INTO hosting_task (vid, nid, task_type, task_status, rid, executed, delta) VALUES (663, 7, 'verify', 0, 5, 0, 0) in /var/aegir/hostmaster-HEAD/profiles/hostmaster/modules/hosting/task/hosting_task.module on line
373. [218.01 sec, 4.64 MB]
WD php: Unknown column 'p.old_short_name' in 'field list'                                                                                                                                                                        [error]
query: SELECT 
      n.title, r.type, p.package_type, p.nid,
      i.iid, i.version, i.version_code, i.schema_version,
      i.status, p.description, p.short_name, p.old_short_name, i.rid,
      i.package_id
      FROM hosting_package_instance i 
        LEFT JOIN hosting_package p ON p.nid=i.package_id 
        LEFT JOIN node n ON p.nid=n.nid
        LEFT JOIN node r ON r.nid=i.rid
      WHERE iid = 1 in /var/aegir/hostmaster-HEAD/profiles/hostmaster/modules/hosting/package/hosting_package.instance.inc on line 126. [218.01 sec, 4.64 MB]

Can you tell me what can be happening here?

Thanks!