Asking and sharing birthdates in the US when it comes to employment is a sure-fire way to be sued. I know because I ran an employment agency. So the first things I need to do is delete the offending fields: gender and age. Gender, no problem. But when I deleted this below in t_userdetails

<div class="control-group">
<label class = "control-label job_lables">{"COM_JOBS_BIRTH_DATE"|translate}{$fieldRequired}</label>
<div class="controls">{$lists.birth_date_html} ({"COM_JOBS_AGE"|translate}{$user->age})
&nbsp;{infobullet text="user_birthdate_help"|translate}
</div>
</div>

I got this error on the front end when I hit user profile.

Calendar.setup:
Nothing to setup (no fields found). Please check your code

Any suggestions, please?