I upgraded CiviCRM from 4.7.28 to 4.7.29. CiviVolunteer is at 4.7.21-2.2.3. I have active projects but the "Manage Volunteer Projects" screen comes up blank. The "Search for Volunteer Opportunities" reports "No results found".
I can create a new project, but it also doesn't show up. I see the projects in the database (civicrm_volunteer_project), although I noticed the new project I tried to create is listed in three identical records.
I have Angular Profiles 4.6-1.0.2 and am on WordPress 4.9.1.
I tried "cv flush" as described in https://issues.civicrm.org/jira/browse/CRM-21210.