Piwik_Url not found


#1

I just uploaded Piwik to my website (in binary mode, as instructed) and went to install it and got the following error:

Fatal error: Class ‘Piwik_Url’ not found in /home/cl58/public_html/cl58services.co.cc/piwik/core/Session.php on line 35
.

How can I fix this?