Date Field Required Error remains after adding date field

This was fixed after deleting the demo and jquery folders. Thanks calefilm.

However, now I am having another problem. After I add in the date field to the Fullcalendar view, I am still presented with the error "Display "Page" requires at least one date field." If I try to save the view I am presented with that error as well as the following:

PDOException: SQLSTATE[42S22]: Column not found: 1054 Unknown column 'human_name' in 'field list': INSERT INTO {views_view} (name, description, tag, base_table, human_name, core) VALUES (:db_insert_placeholder_0, :db_insert_placeholder_1, :db_insert_placeholder_2, :db_insert_placeholder_3, :db_insert_placeholder_4, :db_insert_placeholder_5); Array ( [:db_insert_placeholder_0] => test [:db_insert_placeholder_1] => [:db_insert_placeholder_2] => default [:db_insert_placeholder_3] => node [:db_insert_placeholder_4] => test [:db_insert_placeholder_5] => 7 ) in views_db_object->save_row() (line 2092 of /home/claudia/public_html/durangouu.365durango.com/sites/all/modules/views/includes/view.inc).

Did you mean to capitalize Fullcalendar in sites/all/libraries/Fullcalendar/fullcalendar.js?

My fullcalendar plugin is in sites/all/libraries/fullcalendar/ (eg. sites/all/libraries/fullcalendar/fullcalendar.js)

I uninstalled and re-installed Fullcalendar and I am still getting the error that "Display "Page" requires at least one date field."

Running the following SQL command got ride of the PDOexception, but not the date field error.

ALTER TABLE `views_view` ADD COLUMN `human_name` VARCHAR(255) NULL default '';

Everything seems to be working fine, now, despite the date required error. I think it is probably just a superficial caching issue. Thanks for the help!