VDaemon Error: Invalid Validator type

    <td class="ib_formcontent"><input type="text" size="35" name="emailAddress" value=""></td> 
    <vlvalidator name="EmailR" type="required" control="emailAddress" errmsg="&nbsp;&nbsp;Email required">
	<vlvalidator name="Email" type="email" control="emailAddress" errmsg="&nbsp;&nbsp;Invalid email format">
	<vlvalidator name="EmailC" type="custom" control="emailAddress" function="checkUsername" errmsg="&nbsp;&nbsp;Email address already in use.">
</tr>