Issue: Can't register new users

#0 /home2/pokeron1/public_html/00-EcoMinecraft.com/vault/core/controller/db/xf.php(132): vw_DB_Controller_XF->throw_error(Object(Zend_Db_Statement_Mysqli_Exception), 'INSERT  INTO `v...')
#1 /home2/pokeron1/public_html/00-EcoMinecraft.com/vault/core/model/db/mysql/vw.php(907): vw_DB_Controller_XF->query_write('INSERT  INTO `v...')
#2 /home2/pokeron1/public_html/00-EcoMinecraft.com/vault/core/model/db/mysql/vw.php(777): vw_DB_MySQL_Model->shutdown_or_run('INSERT  INTO `v...', false)
#3 /home2/pokeron1/public_html/00-EcoMinecraft.com/library/vw/XenForo/DataWriter/User.php(43): vw_DB_MySQL_Model->insert(Array)
#4 /home2/pokeron1/public_html/00-EcoMinecraft.com/library/XenForo/DataWriter.php(1409): vw_XenForo_DataWriter_User->_postSave()
#5 /home2/pokeron1/public_html/00-EcoMinecraft.com/library/XenForo/ControllerPublic/Register.php(416): XenForo_DataWriter->save()
#6 /home2/pokeron1/public_html/00-EcoMinecraft.com/library/XenForo/FrontController.php(347): XenForo_ControllerPublic_Register->actionRegister()
#7 /home2/pokeron1/public_html/00-EcoMinecraft.com/library/XenForo/FrontController.php(134): XenForo_FrontController->dispatch(Object(XenForo_RouteMatch))
#8 /home2/pokeron1/public_html/00-EcoMinecraft.com/index.php(13): XenForo_FrontController->run()
#9 {main}
Request State
array(3) {
  ["url"] => string(41) "http://ecominecraft.com/register/register"
  ["_GET"] => array(0) {
  }
  ["_POST"] => array(16) {
    ["username"] => string(0) ""
    ["24c16aa35962830e145a6b4d72df6b69"] => string(12) "chewychunga1"
    ["d6517bb27890980b3eb618e66bcbeb65"] => string(0) ""
    ["3aeece5d64e2bfc09492abb5be1ba07d"] => string(24) "test@hotmail.com"
    ["97f4f5a1163b618d3798caa3cf5f20c6"] => string(0) ""
    ["dob_month"] => string(1) "0"
    ["dob_day"] => string(0) ""
    ["dob_year"] => string(0) ""
    ["ffef6a85f168238a1e5080ac13453605"] => array(1) {
      ["otywnmyyztm2ng"] => string(0) ""
    }
    ["custom_fields_shown"] => array(1) {
      [0] => string(14) "otywnmyyztm2ng"
    }
    ["89acd01e6d061e527e20594f863e2b2e"] => string(19) "America/Los_Angeles"
    ["recaptcha_challenge_field"] => string(270) "03AHJ_VuvF3f-u0viv42nX99LM0Bk-eNYGdQJqf54QJfOusc1skOy7ZLzmfMT5wQ97ry4md8eHbLikYAmwBemQ2mErrOjglip7g_IcBzvSQVMcVdQtuvKPTuLDphhVpl-uMKaip1mQlcqmAXYcx7SNw6TF9U77qrZC3K6symRUCDK85ru7_lNi0DaNQNyMYZACpfad6Pyr_q5s6nXGLIp-NEcv5_bjqGesuhSfN3RFRomFYDy1N05fMFDQ6vy4nCOGqJpEKgYHFHd0"
    ["recaptcha_response_field"] => string(5) "wertn"
    ["agree"] => string(1) "1"
    ["_xfToken"] => string(8) "********"
    ["reg_key"] => string(32) "9606f2e3663949378233c589f47ea63f"
  }
}