I can't find DMX Zone entry in Dreamweaver 2015 CC. It shows up in Dreamweaver 2014 CC in the Insert panel with no problem. Adobe have dropped their Extension manager for the 2015 version, so could it be a problem with your extension manager? When I installed Nivo slider in 2014 DM CC it used Adobe's extension manager by default, not the DMX version.

Hello,
Just use the DMXzone Extension Manager in order to install your extensions.
The extension is located in the Insert panel (Window > Insert) under the DMXzone Menu. (please do not confuse this with the Insert menu)

Hello,
I have un-installed DMX extension manager and Nivo-slider, I have removed Adobe Extension Manager and re-installed your extension manager and Nivo-slider software. It does not ask me for a serial number. It appears to install with no error messages. It still does not show up in the insert panel, or the insert menu for that matter. I do know the difference.
I'm using Dreamweaver 2015 CC running on Windows 10. I also have Dreamweaver 2014 CC on the same PC and your nivo-slider under the DMX zone appears in the Insert menu, not the insert panel menu where you say it should be. I will email you screen dumps if you like??

Yes, please email your screenshots to: