Fatal error: Call to undefined method UsersModelLogin::store() - Модификации расширений для Joomla

<form class="form-validate" method="post" action="/component/user/regwebinar"> <label for="username"><span class="red">*</span> Ваше имя:</label> <input class="required" type="text" size="25" name="username" /> <label for="phone"><span class="red">*</span> Номер телефона:</label><input class="required" type="text" size="25" name="phone" /> <label for="email"><span class="red">*</span>Ваш E-mail:</label><input class="required validate-email" type="text" size="25" name="email" /> <label for="organization"><span class="red">*</span> Организация:</label><input class="required" type="text" size="25" name="organization" /> <input type="hidden" name="summ" value="780" /> <input type="hidden" name="eventid" value="265199" /> <input type="hidden" name="title" value="СОСТАВЛЕНИЕ КРЕДИТНОГО БАЛАНСА" /> <input type="hidden" name="datetime" value="24.06.2014    16.00-18.00 (мск)" /> <br /> <button class="validate" type="submit" id="submit_mail">Отправить и оплатить!</button> </form> 

<form action="/component/users/?view=regwebinar" method="post" class="form-validate"> <label for="username"><span class="red">*</span> Ваше имя:</label> <input name="username" size="25" type="text" class="required" /> <label for="phone"><span class="red">*</span> Номер телефона:</label><input name="phone" size="25" type="text" class="required" /> <label for="email"><span class="red">*</span>Ваш E-mail:</label><input name="email" size="25" type="text" class="required validate-email" /> <label for="organization"><span class="red">*</span> Организация:</label><input name="organization" size="25" type="text" class="required" /> <input value="780" name="summ" type="hidden" /> <input value="265199" name="eventid" type="hidden" /> <input value="СОСТАВЛЕНИЕ КРЕДИТНОГО БАЛАНСА" name="title" type="hidden" /> <input value="24.06.2014    16.00-18.00 (мск)" name="datetime" type="hidden" /> <br /> <button id="submit_mail" type="submit" class="validate">Отправить и оплатить!</button> </form>

default:
  $model = $this->getModel('Login');
  break;

case 'regwebinar':
  $model = $this->getModel('regwebinar');
  break;