[d21spike]

Thank you @d21spike. I felt it was odd that the same channels were excluded when I installed the addon on another computer. I believe I have tried a manual update on the first computer but will try tonite.

(Also, to give a good log, I know I 'enable to debug log' option in kodi settings, I also notice there is one in the addon, is it important to have them both 'enabled' 

 thank you and @eracknaphobia for all your work on this great addon. 

In the case of the channel, it could be a few factors. For example if the HTTP request failed and no information was returned for the channel it may end missing. Or if no guide information was returned the same may happen. Can't know till we see that log unfortunately.

Logging...Basically think of it like this, when you "Enable debug logging" in Kodi, you will printing more information to the log file. With it enabled, any add-on that "chooses" to print is allowed. In the case of Sling, this choice is on a toggle, "Enable Debugging." Since a good bit of information is printed by Sling it may drown out anything else you may be trying to troubleshoot, hence it's on a toggle.

To directly answer your question, yes both have to be "On" in order to retrieve debug information from the add-on.