Hello. Open this file:
/components/com_dtregister/dtregister.php
and make the following changes:
Around line 6298 find this:
$value=implode(\'|\',$value);
CHANGE it to this:
$value=implode(\', \',$value);
Then around line 6393 find this:
if($customrows[$key2]->group_behave==1 || $customrows[$key2]->group_behave==3){
AFTER this line ADD this:
if($customrows[$key2]->type==3){
$value2 = str_replace(\'|\',\', \',$value2);
}
That should do the trick for both individual and group registrations.