Can't save the Email tempate in campaign wizard (ver 8.1.2)

When I create a campaign, when I arrive to the step “Template”, I don’t arrive to continue to the next step.
When I clik on teh “Save” button, I have every time the message “Please provide all of the required fields” and I think to have populate all the the field with a value.
Maybe somebody could help me with my problem.
I’m working on the version 8.1.2
Thanks in advance for your help.