Fontello files giving 404 after buildout run and PFG install

On a Plone 5 site installed from universal installer, I added Products.PloneFormGen, re-ran buildout, and installed PFG via the control panel. Now Fontello doesn't seem to be loading, and if I check in the web inspector, I'm seeing 404's for

I was digging around looking at bundles in portal_registries thinking perhaps I needed to reload something there to refresh the paths.

Any suggestions for how to resolve this?

Sounds like this issue:

But then you didn't mention any form of customization to the theme.
What is the exact version of Plone 5?

Decided to try to replicate this. Was unable to do so with the latest Unified Installer for Plone 5.0.6.