On my Mac with Firefox, when I try to uploaded a file during a "write post" effort I get this error:
Warning: imagecreatetruecolor(): requires GD 2.0 or later in /usr251/home/pdoran/public_html/wordpress/wp-admin/admin-functions.php on line 2184
Warning: imagejpeg(): supplied argument is not a valid Image resource in /usr251/home/pdoran/public_html/wordpress/wp-admin/admin-functions.php on line 2200
Warning: Cannot add header information - headers already sent by (output started at /usr251/home/pdoran/public_html/wordpress/wp-admin/admin-functions.php:2184) in /usr251/home/pdoran/public_html/wordpress/wp-includes/pluggable.php on line 275
And on a PC with Internet explorer a file uploads just fine.
And, the file I tried to upload via Mac DOES GET UPLOADED! The file is there.
Is this a common Mac issue?