got Notice: Undefined index: default in islandora_bibliography_preview_selected() (line 219 of /var/www/drupal7/sites/all/modules/islandora_scholar/modules/bibliography/islandora_bibliography.module).

I dsm form state, no default in that array. may be should set $_SESSION['islandora_bibliography_preview']['style'] to a format when $format is defualt?