I just received a used VZ-Rock by VeriZoom the red light gives a repeated double flash and nothing works. Plugged back my cheap Vivitar to check and it works. Any suggestions welcome.

Sorted.

Finally working. I am using an adaptor with a cheap Vivitar 8 button lanc same connector to the eye but ever so slightly different. I twisted and pushed and it did work but ended up breaking the tip of the plug off. No problem there. I will just solder splice the adapter to the controller.