Rebuild permissions fails

Migrated a site from D6 to D7, D6 site used Nodeaccess 6.x-1.5 and with D7 I've tried using 7.x-1.4 and 7.x-1.4+6-dev does as well.

Rebuild content access permissions just hangs, usually at the same place each time. drush php-eval 'node_access_rebuild();' stops with this error:

Drush command terminated abnormally due to an unrecoverable error.

Error message in logs when using 1.4 dev + the GUI rebuild:

Notice: Undefined index: file in nodeaccess_node_access_records() (line 763 of /var/www/html/sites/all/modules/nodeaccess/nodeaccess.module).

Not sure what's going wrong or if there is something special I'm supposed to do before/after migrating from Nodeaccess D6 > Nodeaccess D7.

Thanks