Hey Alangreg,
when in the file upload pop-up, please check the “File URL” field after uploading the image: in case it displays an attachment URL (ending with “?attachment_id=xx”) or an empty field, press the “File URL” button below the url field so that the link is a direct address of the image file (ends with the filename of the uploaded file and an image extension, e.g. .jpg or .png). Once you have chosen the item and settings, press “Add to OptionTree”. Do not forget to also click on the green “Save all changes” button in the top/bottom right corner of the Theme Options panel.
Please let me know in case the above information does not help to solve the issue – we’ll keep looking for a solution!
Sincerely,
Andrii / Satori Studio