invite creation, secret key issue

I can't seem to add the requested hidden field when creating an invite. When I first went to the invite screen I got the following alert...

You must add hidden field with value "%session[webform_invites_secretkey]" to webform. Click here to add it automatically.

I selected "click here to add it automatically and got the following error.

user warning: Column count doesn't match value count at row 1 query: INSERT INTO webform_component VALUES ("1", "1221787833", "0", "hiddencheckfield", "hiddencheckfield", "hidden", "%session[webform_invites_secretkey]", "a:0:{}", "1", "1", "0"); in /home/okanjico/public_html/lvcsurvey/includes/database.mysql.inc on line 172.

I then backed up and created the field manually as instructed in the first alert. Upon returning to the invite screen I again received the 'you must add hidden field...' alert as above. I chose to ignore the alert since I knew I had it placed in the form correctly and attempted to add emails to the invite list and none ever showed up within the entries. (this didn't surprise me, what with the lingering alert. I wanted to make sure the alert was flagging an issue and not the issue itself)

It appears as though there aren't enough tables within the database to support the insert command that the module is attempting. Please advice.