I am getting an issue when attempting to update WordPress towards the latest version I recieve the next error:

Download unsuccessful.: Destination directory for file streaming doesn't exist or perhaps is not writable. Installation Unsuccessful

I am also getting exactly the same problem when uploading images, it fails and provides the next error

has unsuccessful to upload because of a mistake The submitted file couldn't be gone to live in "the web site path after which uploads directory"

I've checked the permissions from the folders and also the folders themselves are going to 755 &lifier the files included set to 644.

Could anybody let me know why it might be carrying this out?

Where managing a plesk server.

Thanks,

Mark

What are the more error messages, most likely also within the servers log files? Most likely the download for that update ought to be done to /tmp and you're simply not permitted to keep files there? Try setting the continual WP_TEMP_DIR that ought to alter the directory. Put something similar to this inside your wp_config.php:

define('WP_TEMP_DIR', ABSPATH . 'wp-content/')

The permissions you are using appear reasonable, however they is only going to work when the FTP user that WordPress is applying (occur your wordpress_config.php file) is equivalent to who owns individuals files/folders.