Hi, I think I found a bug.
In Graphene Options, Front Page (I use my blog posts page as the front page), I had one category of posts to show, and today I tried to add a 2nd category. I was able to select a 2nd category, but when I clicked Save, I got this error:
"ERROR: You must have selected at least one category when you have "Show posts from categories" selected for the slider."
It didn't make sense because I have the slider disabled.
I was able to fix it by:
1. Enabling the slider, selecting the 2 categories I wanted, and saving it.
2. Disabling the slider again and saving it.
3. Going back into Front Page options and doing it all over again (selecting the 2 categories I wanted).
This time it saved correctly and showed up on my front page.