Yes, you're quite right. Got an informative message.

Line 35 in /sapphire/core/model/MySQLDatabase.php

35 		$this->dbConn = mysql_connect($parameters['server'], $parameters['username'], $parameters['password']);

seems to be the problem. Do I edit that file now?

Thanks

Sorry for the duplicate post

Please post the full error message / backtrace.

Yes, of course. Here it is:

[Warning] mysql_connect() [function.mysql-connect]: Unknown MySQL server host 'apcdev_silver' (1)
GET /03/

Line 35 in /home/useraccount/public_html/cms/03/sapphire/core/model/MySQLDatabase.php
Source

26 	/**
27 	 * Connect to a MySQL database.
28 	 * @param array $parameters An map of parameters, which should include:
29 	 *  - server: The server, eg, localhost
30 	 *  - username: The username to log on with
31 	 *  - password: The password to log on with
32 	 *  - database: The database to connect to
33 	 */
34 	public function __construct($parameters) {
35 		$this->dbConn = mysql_connect($parameters['server'], $parameters['username'], $parameters['password']);
36 		$this->active = mysql_select_db($parameters['database'], $this->dbConn);
37 		$this->database = $parameters['database'];
38 		if(!$this->dbConn) {
39 			$this->databaseError("Couldn't connect to MySQL database");
40 		}
41 

Trace

    * mysql_connect(apcdev_silver,apcdev_silver,banane6)
      Line 35 of MySQLDatabase.php
    * MySQLDatabase->__construct(Array)
      Line 79 of DB.php
    * DB::connect(Array)
      Line 112 of main.php

Ok so that error means SS cannot connect to your MySQL server. In your install you would of put 'apcdev_silver' as your mysql server / hostname which to me is wrong. Normally this would be a URL or something like 'localhost'. To change it have a look at your mysite/_config file.

Thanks Willr, but we're going to uninstall it and start from scratch.

Advice or links to info on two things would help though:

1) How to set the SilverStripe cache directory under /public_html
2) How to change the theme to one of these http://www.theme4.com/free-silverstripe-themes.html

Thanks
PS. It was easy enough to install. We just couldn't change cache location or change theme.