In both the Apple Fonts & Certs payload, once you have uploaded a font or cert you cannot remove it. As a result, you currently have to do one of the following:

• Delete the saved profile and create a new one
• Quit ProfileCreator (not saving the profile) and rebuild
• Add a new Font and/or Cert payload (create a new tab) and remove the one with the font or cert added to remove it

I think a remove button here would be helpful.