Opulus-One Featured Image Doesn't Show

“Sorry no image matched your criteria” – Only for the right image does this happen.

The menu item is in order; the menu item title “Gallery” is from the page “Gallery”, which has an attached featured image. However, the featured image does not show up on the home page. This has only occurred with one of the three featured images on the Home page (the right image of left, right, and center).

I check the featured.php editor to compare the left, center, and right codes, but they all appear to match up, so I don’t understand why just one featured image doesn’t work. And since I’m new to WordPress and working with code, I’m going insane.

Before none of the featured images worked due to the NextGen plugin, however that issue was resolved by editing some of the featured.php code.

Any and all help is appreciated! Thanks!