Currently Cpanel Softaculous script in x10hosting won't work at all because of the current setup of Cpanel Php manager while on the transition from old theme to the paper_lantern cpanel themes. Try to install wordpress manually it is gurantee to work.
No clue either, I manully setup install (like worpdress, drupal etc.), I only use Softaculous as a backup and download and delete after the backup file of my site. You could try to install wordpress manually.