Kaltura suggests that the issue is related to a lingering CaptureSpace role schema remaining on the user's computer. Until the latest version of Kaltura Capture, this was not relevant, as the permission set was basically the same.
To resolve the issue, an individual should:
1)
find and copy any Kaltura Capture videos they haven't uploaded yet
2) delete the Kaltura Capture app from their computer
3) delete the externalSettings file from the Settings folder. The Settings folder is located at:
Mac OS: /Users/<username>/Library/Preferences/Kaltura/Capture/Settings
Windows: C:\Users\<Username>\AppData\Local\Kaltura\Capture\Settings
4) reinstall Kaltura Capture by going to the "Add New" menu in Kaltura Mediaspace or the Canvas's integration
Users who continue to be able to unload Kaltura Capture videos after these steps should ask their campus's Kaltura administrator to submit a ticket to Kaltura Support.