Technical Support wrote:
Can you replicate the problem now? If so, does flash exhibit this behavior from its own test button, or only from the CC?
How far away were you from the light, and were you between the light and subject, or was the light between you and the subject? More specifically, was the HOBD between CC and CSXCV, and/ or might you have been between them? Generally this is not a problem, but at a distance it might be a contributing factor.
It only exhibits the behavior only through the CC, the test button fires just fine. The HOBD is between the CC and CSXCV, and I am between that and the subject, so my distance at best is about 6 feet. and ended up having to ditch the CC and use the sync cord.