Errors when uploading images in WP 3.5

Question

I'm trying to upload images in WP 3.5 to set featured images for posts. Unfortunately I get the following error message:

An error occurred in the upload. Please try again later.

The installed theme is Minimatica. I've tried Googling the issue, but couldn't find any solution except downgrade to WP 3.4.2.

Answer 1

This was addressed on the Minimatica website:

http://www.onedesigns.com/support/topic/how-to-fix-issues-with-media-uploader-with-minimatica-in-wordpress-3-5

You will need to update your functions.php file as follows:

In functions.php find this line (line 225 if you haven’t altered the file):

add_action('init', 'minimatica_register_styles');    

and replace it with --

add_action('wp_enqueue_scripts', 'minimatica_register_styles');

AND

Then find this line (line 437 if you haven’t altered the file):

add_filter( 'ext2type', 'minimatica_mime_types' );

which you will replace with --

add_filter( 'ext2type', 'minimatica_file_types' );

After making the necessary changes, save your functions.php file. If you altered the file offline, upload the saved functions.php file to the wp-content>>themes>>minimatica theme folder. Refresh your new post screen and you should be good to go. This worked perfectly for me so hopefully will for you as well.

Answer 2

I had this problem too.

Try to add this code to your wp-config.php file, just before the require_once(ABSPATH . 'wp-settings.php'); string.

define('CONCATENATE_SCRIPTS', false );