For some reason I am not able to upload images OR set the Featured Image on a custom post type in my custom wordpress theme.
I have added theme support of post-thumbnails to my functions.php file and my custom post type supports it. The link to add the featured image works and it allows me to start uploading the file. But before the file can complete it gives me the error message "An error occurred in the upload. Please try again later". If I visit the media library directly, the file is there, but it shows an error in the custom post page.
Also, when I open the media library from the custom post page it shows as empty.
Anyone out there have any thoughts on why this is?