Cannot disable or replace logo

I set up a subtheme of Bartik in Drupal 7. I also set up the private file system. I was styling everything and when I went to upload a logo, the logo broke. Now the logo url is private://logo_0.png. I cannot remove the logo, disable it via the checkbox, or set it back to default.

I tried some of suggestions from around the net such as using [theme]_preprocess_node. I also tried using a default bartik “template.php” file. (I renamed all the prefixes in it to match my theme name.)

Nothing seems to work and this is the weirdest bug I’ve EVER encountered in Drupal. Anyone have some suggestions or a push in the right direction to try and fix this?