Hi,
I think this is normal, the package no longer exists as such (is empty).
http://www.smalltalkhub.com/#!/~SvenVanCaekenberghe/ZincHTTPComponents/versions/Zinc-FileSystem-SvenVanCaekenberghe.20Commit log
move Zinc-FileSystem functionality to Zinc-HTTP, Zinc-HTTP-Examples and Zinc-Test since FileSystem is the norm now
Note also that Zinc HTTP Components is now maintained at
https://github.com/svenvc/zinc where that package is also gone.
Sven