re-import fails

I get this when I re-import on an existing platform:

sh-3.1$ /var/hostmaster/webroot/drush.php 'hosting' 'tasks'  --root='/var/hostmaster/webroot'  --items='5' --background='1' --publish_path='/var/hostmaster/webroot' --platform='6' -v
Running tasks queue
Task starts processing
Running:/var/hostmaster/webroot/drush.php 'provision' 'import'  --root='/var/hostmaster/webroot'  --backend='1' --task_id='287' --platform='6' --publish_path='/var/hostmaster/webroot' --web_id='3' --web_host='hostmaster.koumbit.net'
Site config file could not be written
Returning information for STARTERKIT
Site config file could not be written
Returning information for zen
Site config file could not be written
Returning information for zen_classic
Returning information for omartest.hostmaster.koumbit.net
Returning information for anarcat.koumbit.org
Returning information for patrick.koumbit.org
Returning information for test.omar.koumbit.org
warning: include(sites/STARTERKIT/settings.php): failed to open stream: No such file or directory in /var/hostmaster/contributions-HEAD/profiles/hostmaster/modules/provision/platform/provision_drupal.module on line 456.
warning: include(): Failed opening 'sites/STARTERKIT/settings.php' for inclusion (include_path='.:/usr/share/php:/usr/share/pear') in /var/hostmaster/contributions-HEAD/profiles/hostmaster/modules/provision/platform/provision_drupal.module on line 456.
warning: fopen(sites/STARTERKIT/site.php): failed to open stream: No such file or directory in /var/hostmaster/contributions-HEAD/profiles/hostmaster/modules/provision/provision.inc on line 337.
warning: fwrite(): supplied argument is not a valid stream resource in /var/hostmaster/contributions-HEAD/profiles/hostmaster/modules/provision/provision.inc on line 338.
warning: fclose(): supplied argument is not a valid stream resource in /var/hostmaster/contributions-HEAD/profiles/hostmaster/modules/provision/provision.inc on line 339.
warning: fopen(sites/STARTERKIT/site.php): failed to open stream: No such file or directory in /var/hostmaster/contributions-HEAD/profiles/hostmaster/modules/provision/provision.inc on line 342.
warning: include(sites/zen/settings.php): failed to open stream: No such file or directory in /var/hostmaster/contributions-HEAD/profiles/hostmaster/modules/provision/platform/provision_drupal.module on line 456.
warning: include(): Failed opening 'sites/zen/settings.php' for inclusion (include_path='.:/usr/share/php:/usr/share/pear') in /var/hostmaster/contributions-HEAD/profiles/hostmaster/modules/provision/platform/provision_drupal.module on line 456.
warning: fopen(sites/zen/site.php): failed to open stream: No such file or directory in /var/hostmaster/contributions-HEAD/profiles/hostmaster/modules/provision/provision.inc on line 337.
warning: fwrite(): supplied argument is not a valid stream resource in /var/hostmaster/contributions-HEAD/profiles/hostmaster/modules/provision/provision.inc on line 338.
warning: fclose(): supplied argument is not a valid stream resource in /var/hostmaster/contributions-HEAD/profiles/hostmaster/modules/provision/provision.inc on line 339.
warning: fopen(sites/zen/site.php): failed to open stream: No such file or directory in /var/hostmaster/contributions-HEAD/profiles/hostmaster/modules/provision/provision.inc on line 342.
warning: include(sites/zen_classic/settings.php): failed to open stream: No such file or directory in /var/hostmaster/contributions-HEAD/profiles/hostmaster/modules/provision/platform/provision_drupal.module on line 456.
warning: include(): Failed opening 'sites/zen_classic/settings.php' for inclusion (include_path='.:/usr/share/php:/usr/share/pear') in /var/hostmaster/contributions-HEAD/profiles/hostmaster/modules/provision/platform/provision_drupal.module on line 456.
warning: fopen(sites/zen_classic/site.php): failed to open stream: No such file or directory in /var/hostmaster/contributions-HEAD/profiles/hostmaster/modules/provision/provision.inc on line 337.
warning: fwrite(): supplied argument is not a valid stream resource in /var/hostmaster/contributions-HEAD/profiles/hostmaster/modules/provision/provision.inc on line 338.
warning: fclose(): supplied argument is not a valid stream resource in /var/hostmaster/contributions-HEAD/profiles/hostmaster/modules/provision/provision.inc on line 339.
warning: fopen(sites/zen_classic/site.php): failed to open stream: No such file or directory in /var/hostmaster/contributions-HEAD/profiles/hostmaster/modules/provision/provision.inc on line 342.
warning: ini_set(): A session is active. You cannot change the session module's ini settings at this time. in /var/hostmaster/drupal-5.x/sites/omartest.hostmaster.koumbit.net/settings.php on line 21.
warning: ini_set(): A session is active. You cannot change the session module's ini settings at this time. in /var/hostmaster/drupal-5.x/sites/omartest.hostmaster.koumbit.net/settings.php on line 23.
warning: ini_set(): A session is active. You cannot change the session module's ini settings at this time. in /var/hostmaster/drupal-5.x/sites/anarcat.koumbit.org/settings.php on line 21.
warning: ini_set(): A session is active. You cannot change the session module's ini settings at this time. in /var/hostmaster/drupal-5.x/sites/anarcat.koumbit.org/settings.php on line 23.
warning: ini_set(): A session is active. You cannot change the session module's ini settings at this time. in /var/hostmaster/drupal-5.x/sites/patrick.koumbit.org/settings.php on line 21.
warning: ini_set(): A session is active. You cannot change the session module's ini settings at this time. in /var/hostmaster/drupal-5.x/sites/patrick.koumbit.org/settings.php on line 23.
warning: ini_set(): A session is active. You cannot change the session module's ini settings at this time. in /var/hostmaster/drupal-5.x/sites/test.omar.koumbit.org/settings.php on line 21.
warning: ini_set(): A session is active. You cannot change the session module's ini settings at this time. in /var/hostmaster/drupal-5.x/sites/test.omar.koumbit.org/settings.php on line 23.
warning: ini_set(): A session is active. You cannot change the session module's ini settings at this time. in /var/hostmaster/drupal-5.x/sites/default/settings.php on line 134.
warning: ini_set(): A session is active. You cannot change the session module's ini settings at this time. in /var/hostmaster/drupal-5.x/sites/default/settings.php on line 136.
Removing task from hosting queue