Please Help! Broken Themes – Website Down

Hi

I have been using the Magazine Basics theme for my wordpress but yesterday I looked on google at my website was blank and wouldnt loadup.

I logged into WordPress admin and all my Themes are missing along with all my plugins etc.

The below is the error message on Appearance Screen.

The only template i can use is Twenty Ten – i cannot load any new plugin or themes i get the is error message….

Could not create directory. /var/www/vhosts/wheyproteinpowder.org.uk/httpdocs/wordpress/wp-content/upgrade/shelter.tmp

Broken Themes
The following themes are installed but incomplete. Themes must have a stylesheet and a template.

Name Description
blue-clean/style.css File not readable.
breathe/style.css File not readable.
default Stylesheet is missing.
evolve/style.css File not readable.
heatmap-adsense-theme/style.css File not readable.
hybrid/style.css File not readable.
intrepidity/style.css File not readable.
magazine-basic/style.css File not readable.
philna2/style.css File not readable.
pixel/style.css File not readable.
primepress/style.css File not readable.
quickpress/style.css File not readable.
suffusion/style.css File not readable.
thematic/style.css File not readable.
zbench/style.css File not readable.