You might find when installing an application from the Application Vault for example Wordpress, that you get the following type of error .
Info
* PHP support (>= 5.2.4) (available: 5.2.17, suitable: yes)
* PHP safe mode off (available: on, suitable: no)
* Database required (mysql, version >= 5.0) (available: 5.0.77, 5.0.45, suitable: yes)
* Disk space required: 6.39 MB (available: 68 775 MB, suitable: yes)
This means that you have not enabled PHP Scripting support for your domain name . To do this you need to login to your Plesk hosting control panel , click on Domains and then the domain you want to manage. When the page reloads click on Web Hosting Settings and scroll down to Scripting and enable PHP for your domain. Click Apply and wait around 10 minutes for the change to take effect , then you can install your application successfully.
