Unable to visualize or upload on 16v4 controller

[Jack S]

Everything worked fine last year. Now when I bring up XLights it says it can't calculate the starting channels for any of my props. Apparently as a result I can't upload or visualize anything. I can open the controller and go into input settings for pixels and everything looks fine. Tried rebooting the controller but no joy.

[Jack S]

Well finally figured it out. XLights had lost  the Falcon controller's identity.  It was listed as a generic controller so didn't have Falcon model no and how many ports it had. I should have paid more attention to the details of the controller setup.