Changing ad field file path causes ad to not display

Not exactly sure if this is a bug, but I edited field_ad_image (changed the file path and file name [via File (Field) Paths]) and now my ads aren't appearing. They're uploading fine, and I see them in my directory, but the ad just doesn't display. I assume it's because I edited that field.

I tested some more, and found that changing the file path is what causes the image to not display. Changing the file name does not cause an issue (I changed it to [node:title] and checked transliterate and pathauto options).