[primaeval]

I created categories HD Channels, SD Channels, News, and Sports, worked fine until today.

When I turned it on only guide info was on HD. Later only guide info was News, so I thought it might only be loading whatever it was on last. I set it to All Channels and restarted and still only guide info was on News.

Is there a way to refresh the guide. Last time I messed with this it was stuck on loading guide and I lost all my channel links.

Thanks

Before you do anything else backup your addon_data folder.
userdata\addon_data\script.tvguide.fullscreen

It it all goes wrong you can use the database or some of the ini files to recreate your settings.

This file has the last channel mappings after exiting the guide:
custom_stream_urls_autosave.ini

This file has the channel categories:
categories.ini

I expect something in the code isn't working. It might be a missing control.
Are you using a custom skin?
Are there any Errors in the kodi.log file?