CiviVolunteer - Functions Not Working after Security Update to Civi 4.7.21 on Drupal
Ron. This is a known issue. CiviCRM made some changes to its Angular (a JavaScript library) integration that CiviVolunteer needs to catch up with.

CiviVolunteer is maintained by an independent consultancy, Ginkgo Street Labs. We would like to resolve this problem as soon as possible, but we have a full slate of projects that, as a small business, we need to prioritize ahead of unfunded work. If your organization is able to contribute developer hours or funds toward resolution of this problem, please contact us.