Repositories listed on "Red Hat Repositories" page, but unable to sync them.

Issue

Using "Red Hat Enterprise Virtualization Manager 3.6 RPMs x86_64" as an example:

There was an error attempting to enable or disable this repository:
{"basearch"=>"x86_64"} are not valid substitutions for /content/dist/rhel/server/6/6Server/$basearch/rhevm/3.6/os. No valid metadata files found for /content/dist/rhel/server/6/6Server/x86_64/rhevm/3.6/os