I am running a multisite install with MediaTemple, http://mediatemple.net
When trying to upload a new image, I get this error:
“test.jpg” has failed to upload due to an error
Sorry, this file type is not permitted for security reasons.
I tried following directions here and it did not work:
Even as I set 777 for each of uploads, 2012, 06, folders, no go.
Also, I am seeing this error in my apache logs (related or not):
PHP Warning: Invalid argument supplied for foreach() in /........./httpdocs/wp-includes/functions.php on line 2460