|Project:||Conference Organizing Distribution Support Modules|
autonodetitle is being used to generate the titles for the time slot content type. Currently the date format being used for the field_slot_datetime field is YYYY-MM-DD HH:MM:SS so the title that are generated for this are something like 2013-01-27 14:00:00 to 2013-01-27 15:00:00.
Simply changing the date format on the admin/structure/types/manage/time-slot/fields/field_slot_datetime does not fix this.
See the issue at: http://drupal.org/node/1103032 for more about why this is happening. It looks like we have the version of the Entity API that includes the patch for the Entity Token modules that is found here: http://drupal.org/node/1058856#comment-5281650