If Dragonframe gave you that message, it means that the DMX-capable device you connected to Dragonframe does not support all the channels you have in your scene's program. For example, if your scene has 200 channels, but you connect a DDMX-S2 (which only supports 99 channels), you will get this message.
For the DDMX-S2, you can order an upgrade chip from our site to get 512 channels in Dragonframe 4 or newer.