When uploading Media files: 'Failed to load the vCloud installations SSL thumbprint due to missing external certificates'

Running vCloud Director 5.6.

When I am trying to upload an Image I get this error: Failed to load the vCloud installations SSL thumbprint due to missing external certificates. Using selg signed certs. Been regenerated them a few times, same error.

Reading releasenotes from vCloud 5.5.1:

• Uploading a vApp or media file sometimes fails
  Attempting to upload a vApp or media file failed with the error Target SSL fingerprint mismatch detected if the vCloud Director DNS name includes cloud. This issue is resolved in vCloud Director 5.5.1.

I have the word 'cloud' in the DNS name. Should this not be fixed? I guess its a related problem.