[DCP-o-matic] Encrypted DCPs on GDC servers?

There has been one report about an encrypted Interop-DCP created by DCP-o-matic not working on a GDC server. Does anyone deal with encrypted Interops for GDCs and can confirm there is a problem? Is anyone willing to test this? We would need his server/media block certificate to create a small encrypted SMPTE and Interop Test-DCP, in case you are not familiar with encrypting DCPs and creating KDMs. - Carsten