blank screen

[orko3001]

Hi, I have just installed rc but have got a blank screen

I got this from my error log:

[Mon Oct 1 12:52:55 2007] [error] PHP Fatal error: Call to a member function on a non-object in /home/brentadv/public_html/rc/program/include/rcube_db.inc on line 366

366 says "* Return SQL statement to convert a field value into a unix timestamp"

Any ideas?