This error generally means that roundcube is not able to connect to the database. Check in your db config file if the database settings are correct and if you haven't made any typos. Also check that the user specified has permissions to access the database you are using for roundcube.
<br><br><div><span class="gmail_quote">On 11/13/06, <b class="gmail_sendername">Philip Matthewson</b> &lt;<a href="mailto:doowy@boxmail.fr">doowy@boxmail.fr</a>&gt; wrote:</span><blockquote class="gmail_quote" style="border-left: 1px solid rgb(204, 204, 204); margin: 0pt 0pt 0pt 0.8ex; padding-left: 1ex;">
How can I install roundcube I try'd but nofing&nbsp;&nbsp;:'(.<br><br><a href="http://www.boxmail.fr/mymail/beta2/">http://www.boxmail.fr/mymail/beta2/</a><br><br><br>???????<br><br>THX<br><br><br><br></blockquote></div><br>