Comment 7 for bug 1023845

Still reproducable with the following branches:

bzr+ssh://bazaar.launchpad.net/%2Bbranch/e-commerce-addons/oerp6.1-stable/ rev. 271
bzr+ssh://bazaar.launchpad.net/%2Bbranch/magentoerpconnect/oerp6.1-stable/ rev. 677
bzr+ssh://bazaar.launchpad.net/~extra-addons-commiter/openobject-extension/oerp6.1-stable/ rev. 377
bzr+ssh://bazaar.launchpad.net/%2Bbranch/product-extra-addons/oerp6.1-stable/ rev. 73

The method ext_import() was removed from base_external_referentials revision 161 (http://bazaar.launchpad.net/~extra-addons-commiter/openobject-extension/oerp6.1-stable/revision/161), replaced by _ext_import_elements(), itself replaced quickly with _record_external_resources(). From the new API, the magento module now seems to call _record_one_external_resource() so it should be feasible to replace the ext_import() calls with this method.