Hi Terrence,
It was the smpte / interop switch over. Particularly on the Dolby server, as we tested on various others and it was fine. I got burned pretty bad on that one (really, really embarrassing) and so haven't looked at OpenDCP again. This issue may have been dealt with since, but I haven't even tried. To be honest, using openDCP isn't worth the risk to me, better to use commercial solutions with relationships to the server manufacturers.
With regards to the broken smpte implementations, you're probably right, problem is exhibitors and server manufacturers have been painfully slow in updating these.
-Juan
online editor | colorist | VFX | BD author
http://JuanSalvo.com
