webcasebv
Hi Maurice,
I just tried to create a test field in backend of DT Register component and you can see that it's showing in the list of fields now
I guess the field name you're trying to create is already existing in the database so that it can not be created.
Try to access database of your site (PhpMyadmin) find the table #_dtregister_fields (# here is your database prefix)
Check whether the field you're trying to create exists there or not, if yes, pls delete it and go back to Backend of your site and create again.
Remember to backup your site first before changing in database.
Regards