Front page features and slider not active

When I originally installed this theme, all of the front-page features including the image slider worked perfectly.

Now they will not load.

I have double-checked everything.

I’ve even gone so far as to install Mantra (vs. Parabola) and re-upload my images with all ‘default’ settings.

Nothing is working and I cannot determine the cause of this.

Please help!

Thank you in advance.