I'm trying to refresh my avatar but it's being rather persistent. I get a 404 error when I enter my character name, and then I check my Technic Pack skin and it's still the same.
EDIT: Aha! I figured it out. Instead of minotar.net/refresh/charactername, try skins.technicpack.net/refresh/charactername, that worked right off the bat so my avatar's showing up correctly now. Thanks for pointing me in the right direction!