The problem is with the referrer validation that was added. It’s on lines 113-122 in the /front-end-upload-pro/upload.php file. Commenting it out makes it work again. But disabling that is obviously no good. Trying to figure out how to fix it now. Will post an answer when (if) I get it.
Did anyone have any luck with this? Same exact thing happened to me. Worked great until about 9/8.
To fix this you need to copy the ‘views’ folder from the plugin to your theme. Then edit the settings.php file, line 41. Add id=”your-profile” to the form.
<form action="<?php echo feu_get_url('settings'); ?>" method="post" id="your-profile">